Java psd api jobs

We are looking for developers who are proficient in WooCommerce and Google Sheet API to help with our ongoing project to improve some of it's functionalities and features. Key Responsibilities: - Assist in setting up WooCommerce functionalities on a website, including product catalog, shopping cart, and payment gateway integration. - Implement integration with Google Sheet API for specific data processing & syncing requirements. Ideal Candidate: - Proficient in WooCommerce, including setting up product catalog, shopping cart, and payment gateway integration. - Experienced in integrating external APIs, specifically Google Sheet API, App Scripts Programming. - A good understanding of data processing and how to leverage Google Sheet for such purposes. The proj...

Hello! I need someone who is an expert in web programming with PHP to translate any kind of PDF for free in using PHP. This PDF must not lose its quality. It must remain intact and it must preserve the ORC format, style and all. I want the translation to be exactly like the one from onlinedoctranslator.com. I know you're going to tell me that the Google Translate api isn't free, but you can use this library (link removed) . Then it has to choose the number of pages in the PDF. Even if the PDF is 100 pages or more, it must be able to translate it. It must support encrypted PDFs and PDFs protected by passwords. I will use your code in my site. You can visit it and you'll see that the PDF translation is missing. I've told you everything and I hope you'll give ...

Hello, This is a $20 project. Looking for a freelancer to develop a python script to retrieve restaurant data from Google Maps using the Maps/Places API. The script should target restaurants that have a phone number and *do not* have a website. The inputs I need to enter are: - Location (latitude and longitude) - Search Radius (in meters) - Ensure the business/place is a restaurant, bakery, etc. Key Data to Retrieve, output in a .CSV: - Business Name - Address - Phone Number - Google Maps URL Thank you, trooper501

I'm on the lookout for an experienced Ionic developer who can seamlessly integrate survey APIs into my app (survey form). In your application, please highlight your relevant experience in similar work.

I have an urgent need for a Windows application to be developed. The ...screen while active - The app must unblock mirroring screen when inactive (means all screensharing/remote desktop apps should work - like teamviewer, vnc etc) - I am ok if they are connected; but I DO NOT want screen to be seen by remote people until its active I need a freelancer who is well-versed in Windows application development and has strong understanding of the API, Powershell, firewall settings, services etc. Your previous experience in developing secure applications is highly desirable. This is an urgent project, so I need someone who can commit to delivering the project within a very short timeframe. Please apply if you have the necessary skillset and availability for this project.

I need an expert in Android Java to develop a 3D Sudoku solver app with the following specifications: - **Difficulty Level**: The app should be able to handle hard level 3D Sudoku puzzles. Please keep this in mind when devising the solving algorithm. - **Features**: The app will solely focus on solving pre-defined puzzles. I do not require a puzzle builder component. - **User Interaction**: Users will input the Sudoku puzzles by typing the numbers. This means the app should have a user-friendly interface that allows for easy input of the puzzle to be solved. The ideal freelancer for this project should have: - Proficiency in Android development using Java - Experience with developing puzzle-solving algorithms - Strong understanding of user interface design - Proven track re...

Hello! I need someone who is an expert in web programming with PHP to translate any kind of PDF for free in using PHP. This PDF must not lose its quality. It must remain intact and it must preserve the ORC format, style and all. I want the translation to be exactly like the one from onlinedoctranslator.com. I know you're going to tell me that the Google Translate api isn't free, but you can use this library (link removed) . Then it has to choose the number of pages in the PDF. Even if the PDF is 100 pages or more, it must be able to translate it. It must support encrypted PDFs and PDFs protected by passwords. I will use your code in my site. You can visit it and you'll see that the PDF translation is missing. I've told you everything and I hope you'll give ...

I am looking for a professional who can build a web application that automates the creation of Google Sheets formulas. Requirements: - Build a web application that allows me to input a plain text command in a Google Sheets cell (i.e., I type "= find the mean of the data above". - Translate the plain text command into a Google Sheets formula using the ChatGPT API. - Authenticate and send the formula to Google Sheets for execution. Ideal candidate: - Proficient in web application development. - Experience with integrating APIs, particularly ChatGPT. - Familiarity with Google Sheets automation and formula creation. - Strong understanding of user interface design for a seamless user experience.

I'm looking to integrate Open AI capabilities with Google Sheets to create an AI assistant that can provide our customer real time inventory information when asked. Key Project Details: - The main task of the AI assistant will be to provide real-time inventory information from Google Sheet that contains our inventory data. Ideal Skills: - Solid experience with Google Sheets API - Proven track record of integrating AI tools with external data sources - Understanding of real-time data processing and automation - Familiarity with predictive inventory management would be a plus I'm looking for a freelancer who can bring both technical expertise and creative problem-solving skills to this project.

I have a YOLO v5 detection Python script, and I'm looking to turn it into an API-based web program with FastAPI. The API must support user inputs for 4 Twilio contact numbers and 4 RTSP addresses, and it should display the four video streams in a grid on a single page. Key requirements: - Convert the existing YOLO v5 detection Python script into a FastAPI-based web program. - Implement user input functionality for 4 Twilio contact numbers and 4 RTSP addresses. - Display the video streams in a grid layout on a single webpage. Ideal skills and experience: - Proficiency in Python and experience with YOLO v5 detection. - Strong knowledge of FastAPI for building web APIs. - Previous experience integrating Twilio for messaging. - Familiarity with displaying multiple video st...

I need Ecwid expert who can help me to customise shopping form and should be did work on ecwid. Make sure they know ecwid and customizing. If not experienced in ecwid them please don't bid, I I'll simply refuse those bids are blinding loaded.

I'm currently in need of an expert software developer to assist with maintaining and updating existing software initially on a hourly basis but i would consider full time as we build relations. This position requires someone proficient in Java, C#, HTML, CSS, and PHP (codeignitor). Key Responsibilities: - Maintaining and updating the existing software as required - Debugging and troubleshooting issues - Collaborating with other team members Ideal Skills: - Strong proficiency in Java, C#, and PHP - Previous experience in software maintenance and updating - Excellent problem-solving skills - Ability to work full-time and communicate effectively - Experience working in a team environment I'm looking for an individual who is reliable, skilled and able to commit to...

I have a project that requires extensive knowledge in Scala Java, focused on analyzing post metrics from social media. Responsibilities include: - Coding in Scala Java to retrieve and analyze social media post metrics - Performing data analysis in order to draw actionable insights The suitable freelancer for this job is someone with previous experience in Scala Java and data analysis, preferably involving social media data. The task requires in-depth knowledge in data sorting and categorization methods and a good understanding of social media platforms.

I need an Azure expert to enable Azure alert notifications to be delivered through voice calls. Key Re...Call Delivery: The notifications should be delivered through voice calls. - Automation: The voice calls should be triggered automatically based on Azure alerts. Ideal Skills and Experience: - Advanced proficiency in Azure services, particularly Azure Alert. - Prior experience with integrating Azure services and setting up custom notifications. - Understanding of voice call delivery systems and API integrations. - Knowledge of automation tools within Azure. Please note that this project is a high priority for us, and we are looking for a freelancer with a proven track record in Azure integrations. Your ability to deliver a reliable and seamless voice call notification system i...

Project Description: We are seeking a skilled Java developer to contribute to the development of an e-commerce platform (basic) with the following key features: User Management: Implementation of user accounts with basic profile information (name, email, password). Product Management: Creation of a product listing functionality with basic product details (name, description, price, category, etc.). Inclusion of at least 100 sample products for demonstration. recommendation system: Generate recommendations based on simple rules and user behavior. For example, you can recommend products that are popular among other users, products in the same category as the ones the user has viewed, or products with similar price ranges. Store and update user view history in the database. Display rec...

I'm seeking a talented developer with extensive experience in API development and extranet creation to help me build a hotel API and extranet system. Key Responsibilities: - Develop a Hotel API with functionalities including hotel availability retrieval, room booking, and inventory management. - Design an intuitive, easy-to-use Hotel Extranet with real-time room availability, online booking management, and robust reporting and analytics features. Key Requirements: - In-depth experience in API development, ideally in the hotel or travel industry. - Proficiency in creating user-friendly, efficient extranet systems. - Prior experience with dynamic pricing mechanisms and the ability to implement custom pricing for various customer segments. This is a challe...

Solve a cors issue in sever api . Api is developed in python flask .

...main areas of the site (Equita Club Deals, Equità Bio Casa Imobiliária, Equità Construction Products and Services). Equita Club Deals (private P2P functionality): Login/Register Projects page Investor dashboards Access to documents and contracts Equità Bio Casa Imobiliária: Property listings (template creation and eventual API connection to partner real estate brokearage platform) Property details Contact form Equità Construction Products and Services: Product catalog (API connnected to dropshipping platform) Service forms About Us: Company history Team Blog: Articles on the real estate and construction market Contact: Contact form Contact information Location Social Media Links: Instagram Facebook I would appreciate it if ...

...project owner, I'm searching for a proficient AI engineer who can expertly manage the Stack AI platform. Your three main objectives would be: 1. **Data Processing & Model Training:** - You'll need to clean and preprocess data within Stack AI - Also, train and evaluate models for maximum performance. 2. **Implement Google Search and ChatGPT Workflow:** - Familiarity with Google Search API and its integration into ChatGPT is a must. - Implement natural language processing to handle user queries - Design an intuitive and user-friendly interface to facilitate user interaction with the search process. 3. **Professional Recommendation Creation:** - Lastly, your task is to create a recommendation system using Stack AI that will offer professional sug...

...documentation But there is this message. I need someone who can analyze the problem, and if possible, solve it. According the Masterstudy plugin support, it´s running. So, could be other problems. this is the error message Error calling GET : (403) <!doctype html> <html> <head><meta charset='utf-8'> <title>Error • Udemy</title> </head> <body> Forbidden <script>(function(){if (!) return;var js = "window['__CF$cv$params']={r:'885cdcdf3f9f9180',t:'MTcxNjA0NTk1Ny4wMzIwMDA='};_cpo=('script');_cpo.nonce='',_cpo.src='/cdn-cgi/challenge-platform/scripts/jsd/'

I am on the hunt for a skilled Android developer to assist with my project. My main focus is on app development, specifically in the context of an existing Java application. Key tasks and features include: - Developing a stable and efficient Android app based on the current Java application - Integrating Firebase as the main backend and database; making efficient use of its real-time database features - Creating robust user profiles functionality - Implementing live in-app chat - Introducing in-app purchases For this task, someone with experience in Java and Firebase is highly preferred. If you have done similar tasks before, please attach your portfolio when bidding. Your ability to produce quality UI design and to debug any issues promptly will make you an ideal ...

I'm looking for a wizard developer who can create an enterprise API. I do not have a preferred programming language, therefore, use the one you find most suitable and efficient. I need the API to include the following features: I am seeking a skilled developer to create a API to act as a third party implementation to serve clients such a service oriented businesses as Massage Therapists for client booking via scheduling calendar of showing available appointments ( this calendar shall also be utilized by the client to create time blocks when required ) in addition require online credit card initial deposits at time of scheduling and final payments featuring Vaulting to retain credit card details for future or ongoing appointments. A feature automation to fwd no...

I’m looking to move from tebex to sell digital products for Rust, a popular online game. I am in need of a developer who specializes in creating stores leveraging a headless API for payment processing. Here's what the project would entail: - Building a digital game store to sell in-game currency, items, equipment, and game modifications. - The store should also issue commands to the Rust game server when a purchase is made. Ideal Skills and Experience: - Experience with APIs, specifically headless APIs, and payment processing integrations. - Demonstrable experience in creating webstores. - Familiarized with gaming servers, particularly Rust. - Experience in handling digital products.

I'm looking for a Web3 developer with experience building decentralized applications (DApps) on the Polygon network, specifically the NFT marketplace. work: - Implement smart contract functionality required for NFTs on the Polygon network. - Smart contract development - Developed transaction distribution server on polygon mainnet using Web3 API - Implement smart contract functionality required for NFTs on the Polygon network. Ideal skills and experience: - Proficient in web3 technologies with a focus on Polygon. - Proven experience in developing decentralized applications (DApps), especially NFT marketplaces. - Good understanding of security measures and best practices in the blockchain space. - Ability to create attractive and engaging user interfaces. - Strong ...

I'm in need of a skilled freelancer to embed a clean, sortable, and filterable table into my personal blog, which will continuously pull data from a Google Sheets document. The key po...visually engaging table on my blog. This table should be easily filterable and sortable based on different columns. - **Automatic Updates:** The data in the Google Sheets will be changing daily. I need to ensure that the table on my blog automatically updates whenever the Google Sheets data changes. Ideal candidates should have experience with: - Data handling and visualization - Google Sheets API - Web development (specifically embedding tables) - Automation and real-time data updates on websites. Please let me know your relevant experience and provide some examples of similar projects yo...

Full stack developer to maintain and enhance a web application which is now in production Key technologies- vue js, web applications, api , production support , gcp

...automation bots. These bots should offer the following functionalities: - Message Scheduling: Automating message delivery at specific times. - File Sharing: Facilitating easy and organized file exchange between team members. - Task Assignment: Automating the delegation of tasks within the team. - Onboarding: Assisting with the onboarding process for new team members. I prefer the use of the Slack API to develop these bots. The ideal candidate should have a good understanding of this platform and be able to leverage its features effectively. User interaction with these bots should be seamless and intuitive. I envision the following methods: - Direct Messages: Bots should respond to messages sent directly to them. - Specific Channels: Bots should interact with team members with...

...using Java or Kotlin. 3. Implement game mechanics, user interfaces, animations, and audio effects according to specifications. 4. Optimize game performance for various Android devices to ensure smooth gameplay. 5. Integrate third-party libraries, APIs, and SDKs as required for features like analytics, ads, and social media sharing. 6. Conduct unit testing and debugging to ensure the stability and reliability of the application. 7. Work closely with the QA team to identify and fix bugs and performance issues. 8. Stay up-to-date with the latest trends, technologies, and best practices in mobile game development for Android. Requirements: 1. Proven experience as an Android App Developer with a portfolio of released applications or games on the Google Play Store. 2. Proficiency in ...

Hi, we have simple API which we want to integrate and get listing on website please only bid if you have experience on wordpress custom

I'm on the hunt for a skilled Larave...on the hunt for a skilled Laravel developer, ideally with comprehensive full-stack capabilities. The primary responsibilities will include: - Implementing a user management system: The system should comprise of user roles and permissions for a well-rounded experience. - API development: This requires building efficient, secure, and scalable APIs that enhance our app's performance. The ideal freelancer should possess solid expertise in both frontend and backend development, Laravel PHP, user management systems, and API development. Your duties will be central to enhancing our app's functionality, in a bid to deliver a user experience that's both unique and seamless. If you've handled similar projects before, I&...

...application. This should be designed with React and JavaScript and will need to connect with an API. Key Requirements: - The application must have a clean and user-friendly interface - It should contain necessary information in an organized manner - The use of React and JavaScript is a must - It should be designed for a quick development turnaround ideally ASAP This project primarily involves the design and development of the web application. The goal is to create a simple, fast, and fully functional application that serves as an informational platform. Ideal Skills and Experience: - Proficiency in React and JavaScript - Experience in designing and developing simple web applications - Previous work with API connections - Ability to deliver a project within a tight deadl...

I'm looking for a skilled and experienced WordPress professional to redesign my current website. The primary reasons for this project are to address its outdated design and poor user experience. Key Points: - Outdated Design: The color scheme and layout are the main elements that need updating. The current design is not engaging or aesthetically pleasing. - Poor User Experience: Th...projects, please include it in your bid. Your creativity, expertise, and ability to deliver a user-friendly website will be key in the successful execution of this project. We want a New Design Close to the setup of this website Looks appealing style is great nice bootstrap Latest HTML5 CSS3 We will show our website once we select someone All we need is homepage PSD Design

I'm looking for a skilled graphic designer to create a minimalist logo and an image template for my upcoming e-commerce site. Key Requirements: - Logo Design: The logo should reflect the minimalist style, and convey the essence of quality home goods. - Image Template: The image template should be versatile and adaptable, sui...particularly in e-commerce and branding. - Proficiency with minimalist design and understanding of home goods market. - Ability to create adaptable, scalable image templates. - Strong communication skills to understand and translate my vision into a cohesive design. If you're a creative designer who can deliver high-quality, on-brand designs, I'd love to hear from you. Ill need the template files PSD so i that i can edit in the future Refe...

...and order tracking. - Super fast load time at least 93 score in google load time. - Booking Platform with Calendar: Additionally, the site will have a booking platform integrated with a calendar. After payment, users should receive a confirmation itinerary and payment invoices to be sent to the client after the payment is successful. Geofencing area where the events will be surcharged. Google map API integrated. Rank Math plug in to be integrated. SEO Friendly website Ideal candidates for this project should have: - Proficiency in Magento, along with Python or PHP - Prior experience in developing custom e-commerce websites - Strong understanding of user experience and interface design - Ability to ensure a high level of security for transactions - Experience with integrating an...

...needs to integrate with Google services like Maps and Calendar. The design of the app should be minimalistic but seamless for easy user interface. Therefore, a developer with design skills would be perfect for this task. - ESSENTIAL SKILLS: - Android app development - Knowledge of SQL - Minimalistic app design - Experience in GEO Fencing, QRCODE/Barcode scanning, Face Recognition - API integration with Google services This project will require rigorous testing to ensure quality and functional assurances. I am looking for experts with a keen eye for detail and the ability to deliver under deadlines. 1. Programmer has to use our web app url as attached in WebView framework of android. We need to provide link for camera and upload from gallary feature from many pages...

I'm looking for a skilled graphic designer who is experienced in calligraphy to create a logo for my fashion brand, "Zameela". Style: Calligraphy Tone: Elegant, premium, luxurious, and minimalist Colors: The logo should be designed to look elegant in both black and white colors. Format: Please provide the source file for future editing purposes (e.g., AI, EPS, PSD). The logo should: - Feature classic calligraphy style - Utilize a color palette of black, gold, and rose gold - Be text-based without any icons or symbols Guidelines: - The design should incorporate a calligraphy style, reflecting the brand's elegance and luxury. - The logo should be minimalist yet convey a premium feel. - Ensure the logo looks distinctive and stands out in black and white colors. ...

an experienced C++ or Python or Tenserflow or Java or AI (etc.) developer to create a software program for Windows. A skilled developer with expertise in creating a dynamically pixelating images (not simple machine or grid pixelation). The program should have the following functionalities: - dynamically pixelate any imported image into mathematical, non-mathematical or custom shapes in various styles with user adjustable settings and configurations - adding additional shapes into the created shapes in separate layers to create more complex outcomes - export of the pixelated images as 300dpi vectorized or rasterized files - intuitive interactivity with user friendly adjustments, selections and editing The ideal freelancer would have extensive experience in graphic programming, cre...

...communication using WhatsApp Cloud API. The main goal of this project is to streamline my personal communication processes and make it more efficient. Key Responsibilities: - Integrating WhatsApp Cloud API: The first phase of this project would involve setting up the WhatsApp Cloud API, including the integration of a websocket webhook for real-time communication. - Developing Automation Scripts: I will need you to create Python scripts that can automate various communication tasks on my behalf. This might involve sending messages, responding to specific triggers, or even managing contacts. Skills and Experience: - Proficiency in Python: You should be an expert in Python programming, as this will be the primary language used in the automation scripts. - Experience...

Warning: This project is for advanced developers. Those that can read complex code structures - I mean it. You must be able to understand ReactJS but also understand a large existing project with little help from me. We're looking for a full-time programmer who is hard working, honest, and enj...experience do you have? Read this job description carefully, as it serves as an indicator to me if you pay attention to detail. The project consists of connecting to a Drupal project via REST endpoints. We're saving data to the PWA using IndexedDB, encrypting sensitive data, and by default refreshing the UI only when there's new data via push notifications (which come from the server using Web Push API), we're also using Android to load the PWA. Is this something you&#...

...registration - Comprehensive shift scheduling and management tools - Facility to view and edit shift details - User access restrictors based on roles The web platform should be designed with a professional and corporate aesthetic, ensuring it's not only functional but visually appealing to users. Ideal Skills and Qualifications: - Proficiency in web development, particularly with SpringBoot : Java and Angular: TypeScript or JavaScript - Experience in creating and managing user access systems - UI/UX design skills, with a focus on professional, corporate visuals - Good communication skills for grasping and bringing to life client's needs and preferences The successful candidate will be able to deliver an efficient and user-friendly platform, tailored to support the s...

Project 1: You should write a program implementing the calculator's functionality. Interface appearance use graphic buttons (this may be the simplest graphic with a color change), the result of the operation can be presented in the form of binary, octal hexadecimal (additional buttons), enter the history button: opening a n...presentation skills by creating a short video of "you" breifly explaining how you coded and ran the simulator in Android studio or Flutter Basically, A demonstration video of running the code in Android studio or in Flutter). Submit the source code, the apk file and the video of yourself demonstrating the code as Task3.zip. Note : The content of the projects must be made in Android studio and in Java language, and the content of the applica...

Project Description: We are seeking a skilled Java developer to contribute to the development of an e-commerce platform ( A BASIC DESIGN ) with the following key features: User Management: Implementation of user accounts with basic profile information (name, email, password). Product Management: Creation of a product listing functionality with basic product details (name, description, price, category, etc.). Inclusion of at least 100 sample products for demonstration. recommendation system: Generate recommendations based on simple rules and user behavior. For example, you can recommend products that are popular among other users, products in the same category as the ones the user has viewed, or products with similar price ranges. Store and update user view history in the database....

Our project aims to enhance the Django website running on Ubuntu by addressing several key issues. We will streamline Google registration, fix email registration to avoid redundant data requests, and update the logo. We'll verify email confirmation, resolve logout errors, and ensure the mach...registration to avoid redundant data requests, and update the logo. We'll verify email confirmation, resolve logout errors, and ensure the machine names display fully. We'll adjust font sizes, reorganize dashboard boxes, correct console errors, and fix icon colors. Additionally, we'll refine machine information display, adjust button states, and update dropdown menu functionality. Finally, we'll correct API settings visibility and fix data display issues on the profil...

I'm looking for a C# developer to build an application for me. You need to make C# application (app/web/console whatever is best for you). Basically, it is POST, GET, PUT, DELETE requests against API. Problem is that there is limited documentation, so you must conclude based on swagger documentation how to implement each of functions. Swagger link will be provided. Please, apply for this job if you can do it TODAY.

I'm seeking a skilled Flutter and ...posting and Employee Profile creation - In-app chat and Whatsapp integration - Bookmarking and job/profile sharing functionalities - Premium membership that enables additional contact features - MySQL database schema design - Integrated Google Admob Advertisement Backend Work: - You'll develop a RESTful API with PHP+MySQL to support app functionalities. The ideal candidate will have significant experience in Flutter Development, PHP, and MySQL, coupled with a strong understanding of RESTful API design and integration. Please bid if you're capable of delivering high-quality, efficient code and can prove past experience in developing similar applications. Your ability to meet deadlines and communicate effectively will be cr...

I need a Laravel developer to integrate the Octopia (cDiscount) API for the purpose of creating new products. Key requirements and expectations for the role: - Proficient in Laravel for seamless integration - Experience with API integrations - Ability to create new products using the octopia platform API - Strong understanding of RESTful APIs I will provide the details to the selected candidates. Here is the documentation link Looking forward to your bids!

I'm on the lookout for an experienced Ionic developer who can seamlessly integrate survey APIs into my app (survey form). Also, I want to integrate a few screens from other Ionic App. In your application, please highlight your relevant experience in similar work.

I'm seeking a skilled individual who can help me implement an IoT solution within a month timef...understanding of MQTT (Message Queuing Telemetry Transport) and how to use it to integrate various IoT devices. - Data Collection & Analytics: Proficiency in handling data streams from these devices, ensuring seamless collection, storage, and basic analytics. - User Interface & Experience: Creating a clear, intuitive UI to monitor and interact with the IoT data is essential. Ideal Skills: - Proficient in Java, MySQL, and Tomcat - Experience with MQTT and IoT SCADA is a plus - Strong background in designing user-friendly interfaces - Able to deliver quality work within a tight timeframe Go through the PDF file attached to understand the flow . For Gateway and Sensors Deta...

Sync/send contact data and mapped custom fields between CRM and proposal tool to improve accuracy and reduce manual data entry and double handling. Share events. Apps: Go High Level , Pylon Observer REST API & Webhooks available

...need of an experienced Android app developer who can assist me in migrating my app from its current version of Android Studio 2023 Jellyfish. The app is primarily written in Java, therefore, expertise in this language is crucial. Key Tasks: - Migrate the app from Android Studio 2023 Jellyfish to the latest version of Android Studio - Ensure the functionalities such as user authentication, database synchronization, and push notifications work seamlessly after the migration - Test the app thoroughly to identify and rectify any potential issues that may arise during or after the migration Ideal Candidate: - Proficient in Java and experienced in Android app development - Previous experience in app migration - Strong understanding of user authentication and push notification...