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Build a Privacy-First Contact/Communication App I want to build a mobile app platform — a privacy-focused communication system where users can share a QR or NFC tag that enables others to contact them without exposing personal phone numbers. The app is mainly used for situations like parked vehicles, door contact, public tags, etc., where someone needs to reach a person without seeing their actual number. Key Functional Requirements 1. User Mobile App (Android & iOS) User Account & Setup Register and login using phone number + OTP Create a personal profile Link a QR code / NFC tag to the user account Tag Management Generate virtual tag (can be printed or displayed digitally) Support both QR codes and NFC tag reading Ability to enable/disable tag anytime in the app 2. Privacy-First Contact Flow When Person A scans the QR / taps the NFC tag of Person B: The app does not show Person B’s real phone number Person A can call or message Person B via the system This requires: Masked calling (virtual number bridge) Masked SMS messaging Masked WhatsApp messaging (if supported through APIs) All without revealing the real phone number to either side. 3. Communication Features Masked Calls Use a telephony integration (e.g., Twilio, Vonage, Plivo, etc.) System should assign a virtual number that bridges calls The app should log call metadata (time, duration, caller ID alias) Masked Messaging Relay messages without showing real numbers Optionally support in-app chat with push notifications WhatsApp Notifications Notify users via WhatsApp when their tag is scanned Optionally provide reply capability (depending on WhatsApp API availability) 4. Tag Use Cases The app should support multiple tag types: Vehicle Tag When someone scans a car’s tag, the owner is contacted via masked communication Useful for parked car contact without leaving a number Door/Visitor Tag QR tag at home entrance Scanning can trigger call / message / video call request (Optionally with geo-fencing to ensure scan only from nearby) Offline Tag Support Ability to use tags even without internet (e.g., via SMS fallback) 5. App UI/UX Features Clean home dashboard QR generator and NFC setup Tag enable/disable switch History logs for scans, calls, messages Simple scan interface 6. Admin Panel (Web Dashboard) Admin panel should allow: User management Tag status tracking Analytics for calls / messages / scans Manage virtual number pool Notification system 7. Backend & APIs Backend should handle: User authentication Tag/QR code management Masked communication routing Telephony provider integration Analytics & reporting
Projektin tunnus (ID): 40255122
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83 freelancerit tarjoavat keskimäärin ₹67 715 INR tätä projektia

Hello, Your vision for a privacy-first communication app using QR/NFC tags is compelling, addressing the need for secure, anonymous contact. I recognize the critical importance of masked communication features, ensuring personal information remains protected while enabling seamless interactions for users. I’m Waqas from Eclairios, a professional software engineer with over 7 years of experience in app and web development. I have successfully completed 128 projects, earning a 5.0 rating from satisfied clients. I specialize in mobile apps (Android, iOS, Flutter), website development, custom APIs, and backend solutions. My goal is to deliver high-quality, scalable solutions that meet your business needs. Why hire me? ★ 100+ Projects Completed with 5-star rating. ★ 3 months of free post-launch support ★ Expertise in advanced technologies and systems Let’s connect and discuss how I can help you with your project. Best regards, Waqas
₹45 033 INR 7 päivässä
8,4
8,4

Hello I have read your job and I am very interested in developing the Privacy-Centric QR/NFC Communication App for you, since I have done a similar type of project, so I am very clear with the flow. I have more than 6 years of experience in the development of websites and applications (Android, iOS). I developed the taxi booking application, the chat and appointment application, the development of shopping cart applications, etc. My experience as a developer includes working with mobile applications when integrating them with different platforms using a variety of protocols that make me perfect for their work. In the past I worked for many applications development projects that required extensive details. I hope you choose me for this job, Do you already have user interface design screens? Please share the details of your project to start working together, Waiting answer, Thank you.
₹200 000 INR 40 päivässä
8,6
8,6

Hello, I would be excited to help you design and develop this secure, production-ready mobile application for Android and iOS. I have experience building mobile applications with secure authentication (OTP-based login), real-time communication features, QR generation, push notifications, and backend integrations. For masked calling and messaging, we can integrate reliable telephony providers such as Twilio, Vonage, or Plivo, enabling virtual number bridging without exposing personal phone numbers. Looking forward to collaborating on this impactful project. Best regards,
₹56 250 INR 7 päivässä
7,6
7,6

Hello! We at Smart Sols are excited about the opportunity to develop your privacy-centric QR/NFC communication app. With over 9 years of full-stack development experience and expertise in mobile app development using Flutter, we are confident in delivering a secure, user-friendly, and efficient app tailored to your privacy-first requirements. Our team prioritizes data protection and seamless user experience, ensuring confidentiality in communication through advanced encryption and privacy standards. Leveraging our skills in cross-platform mobile development, we will build a robust and scalable platform that meets your vision and budget. We would love to discuss your project in detail to ensure all your privacy and functionality needs are met. Looking forward to collaborating and bringing your innovative app to life with professionalism and dedication.
₹75 000 INR 40 päivässä
6,9
6,9

Hi there, I’ve reviewed your Flutter app requirements and would love to help. With 5+ years of experience in cross-platform development, I specialise in clean UI, smooth performance, and robust API integration. I’ll begin with clear planning, share regular progress updates, and ensure the app is fully tested before launch. Let’s connect to discuss your vision — I’m ready to get started! Best, Bhargav Flutter Developer | Android & iOS Expert
₹56 250 INR 7 päivässä
7,1
7,1

Hi, This is a serious build — privacy-first communication with masked calling isn’t a simple QR app. The core here is secure routing + reliable telephony integration, not just generating codes. We can build this properly for both Android & iOS with a strong backend handling masked communication and tag control. Here’s how I’d approach it: • OTP-based login and secure profile setup • QR + NFC tag generation linked to user account • Enable/disable tag instantly from app • Masked call bridge using virtual number pool • Masked SMS relay system • Optional in-app chat with push notifications • Scan history + call/message logs • Geo-check logic for vehicle/door use cases • Admin dashboard for number pool management + analytics The key part is routing logic — calls must bridge without exposing real numbers, and message relay must remain secure and logged. Offline fallback via SMS trigger can also be structured if needed. This needs clean backend architecture and careful telephony setup. I’ve handled API-heavy systems with secure routing logic, so this aligns well. Let’s connect and define whether you want full WhatsApp two-way messaging or notification-only for phase one.
₹75 000 INR 45 päivässä
6,6
6,6

Hi there, ★ I’m Efanntyo, a seasoned full-stack developer with deep expertise in PHP, API integration, and backend systems, including Twilio-based telephony, secure messaging, and analytics. I’ve led privacy-first communication projects that bridge calls and messages without exposing personal numbers, aligning perfectly with your Privacy-Centric QR/NFC app requirements. I will design a robust backend (PHP/Laravel) to manage user auth, tag/QR code lifecycle, masked routing, and telephony provider integration while ensuring scalable analytics and admin oversight. What you’ll get: - Private by design: masked calls, masked SMS, and optional masked WhatsApp messaging via reliable API layers. - Flexible tag management: QR and NFC tag generation, per-user linking, enable/disable controls, and offline tag support with SMS fallback. - Seamless user experience: simple scan, instant tag contact flow, and clean dashboards with history and notifications. - Admin-ready: centralized pool of virtual numbers, analytics dashboards for calls/messages/scans, and robust notification systems. Approach: 1) Kickoff with requirements mapping and API spec refinement; 2) Implement modular backend with Laravel, secure token auth, and a scalable telephony bridge; 3) Integrate QR/NFC workflows and offline fallback; 4) Build admin panel and analytics; 5) Deliver iOS/Android apps with a focus on smooth masked communications and privacy controls; 6) QA, security hardening, and monitoring. What is your pr
₹62 440 INR 5 päivässä
6,8
6,8

Hi there, I’m excited about the opportunity to create your Privacy-First Contact/Communication App! With my experience as a top-rated freelancer in California, I’ve successfully delivered similar projects, ensuring privacy and seamless communication solutions. My expertise in mobile app development for both Android and iOS aligns perfectly with your vision for a QR/NFC based platform that maintains user anonymity while enabling efficient contact management. I fully understand the importance of maintaining privacy, especially in scenarios like parked vehicles or public interactions. I plan to integrate features like masked calling and messaging, utilizing APIs from trusted telephony services such as Twilio. This will ensure users can connect without ever revealing their personal phone numbers, while providing a user-friendly experience. I’m eager to discuss your project further and can kick off development within a week. Could you share your thoughts on specific user scenarios we should prioritize? What specific user scenarios do you foresee being the most critical for the app's initial launch?
₹68 685 INR 9 päivässä
6,4
6,4

Hi I will be able to help you. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. I am having expertise in Native on Android Java, kotlin and IOS Swift, and For Hybrid Cross platform on Flutter Dart & React- Native, and for web and backend on react js and node js, Python Django , java spring boot and php CodeIgniter mvc. Please consider me and initiate a chat for further detailed discussion. Regards, Anju Logical Soft Tech Pvt Ltd, Indore(M.P)
₹56 250 INR 20 päivässä
6,6
6,6

Your masked communication system will fail if you're routing calls through a single Twilio number pool without implementing sticky sessions. When Person A calls Person B twice, they'll get different virtual numbers each time, breaking conversation continuity and confusing users. Before architecting this, I need clarity on two things: Are you planning to operate in multiple countries? Twilio's virtual number availability and WhatsApp Business API compliance varies drastically by region - this affects your entire telephony strategy. What's your expected concurrent call volume in month one versus month six? If you're anticipating more than 500 simultaneous calls, we'll need to pre-provision number pools and implement load balancing, which changes your infrastructure costs significantly. Here's the architectural approach: - TWILIO + PLIVO FAILOVER: Build a dual-provider system where Plivo handles overflow traffic when Twilio hits rate limits, ensuring 99.9% call completion rates during peak usage. - NFC + QR DUAL PROTOCOL: Implement NDEF record writing for NFC tags with fallback to deep-link QR codes, so tags work even when users haven't installed the app yet (redirects to App Store/Play Store first). - WHATSAPP BUSINESS API: Integrate official WhatsApp Cloud API with template message approval workflow - this is the only compliant way to send notifications without getting banned (third-party solutions will get your account suspended). - PHP LARAVEL BACKEND: Use Laravel Horizon for queue management of SMS/call routing with Redis-backed job processing to handle 10K requests per minute without blocking. - GEOFENCING VALIDATION: Implement device GPS verification within 50-meter radius for door tags to prevent remote scanning attacks - this requires native iOS CoreLocation and Android FusedLocationProvider integration. I've built similar masked communication systems for two logistics companies handling 200K monthly interactions. The biggest failure point is always webhook reliability - Twilio's call status callbacks will fail silently if your server returns anything except 200 OK within 10 seconds. Let's schedule a 20-minute technical call to map out your telephony provider selection and number provisioning strategy before you commit budget to the wrong infrastructure.
₹50 630 INR 21 päivässä
6,5
6,5

Hello! As per your project post, you’re looking to develop a privacy centric QR and NFC based communication app that allows users to share tags for contact without exposing their real phone numbers, using masked calling, messaging, and secure routing through the platform. The goal is to build a secure, scalable mobile and web system that protects user privacy while enabling seamless communication through QR codes, NFC tags, and virtual number bridging. My focus will be on building your privacy first communication platform featuring: secure mobile apps with OTP authentication and QR and NFC tag generation and management, masked calling and messaging using telephony integrations like Twilio or Vonage with full communication logging, in app dashboard with tag controls, scan history, and real time notifications, and a web based admin panel for user management, analytics, and virtual number pool control. I specialize in building secure mobile applications and real time communication platforms with focus on privacy architecture, telephony integration, and scalable cloud infrastructure. My focus will be on delivering a robust, user friendly system that ensures complete anonymity while maintaining smooth and reliable contact flow. I am confident I can deliver a secure, scalable, and privacy focused QR and NFC communication platform tailored to your requirements. Best regards, Nikita Gupta.
₹100 000 INR 45 päivässä
6,4
6,4

Hello There!!! ★★★★ (Privacy-Centric QR/NFC Communication App) ★★★★ I understand you need a privacy-first mobile app for Android & iOS that lets users share QR or NFC tags to be contacted without exposing their real phone numbers. The system should handle masked calls, messages, optional WhatsApp notifications, and support vehicle, door, or public tags, all with an admin dashboard for analytics and user management. Services mentioned here based on project details ⚜ Mobile app development for Android & iOS with Flutter/React Native ⚜ User registration/login with phone + OTP and personal profile creation ⚜ QR/NFC tag generation, linking, and enable/disable management ⚜ Masked communication: calls, SMS, optional WhatsApp integration via Twilio/Vonage ⚜ Scan interface with history logs, push notifications, and geo-fencing support ⚜ Admin panel for user & tag management, analytics, and virtual number pool ⚜ Backend API development for authentication, tag management, and communication routing With 9+ years of experience in mobile apps and secure communication systems, I focus on clean, scalable architecture and user privacy-first design. I’ll deliver a robust platform ready for real-world use cases. Looking forward to discussing your vision and starting development. Warm Regards, Farhin B.
₹40 000 INR 15 päivässä
6,6
6,6

I see your app needs a secure way for people to share contact info via QR or NFC without exposing phone numbers, with masked calls and messages bridging users. I worked on a similar privacy-first contact app where virtual numbers masked real ones, routing calls and SMS through Twilio seamlessly, so I understand the tricky parts of telephony integration and relay logic. To keep privacy tight, would you prefer a specific telephony provider (Twilio, Vonage, etc.) or open to my recommendation based on cost and API coverage? Also, how strict should offline (SMS fallback) work—just basic text relay or some richer interaction? I can build the Android/iOS apps with QR/NFC generation, enable/disable tag switches, and masked communication flows, plus a simple admin panel for user/tag management and analytics. Logging call/message metadata and ensuring push/WhatsApp notifications can be set up reliably too. This is manageable in stages: start with user/tag management and masked calls, then add messaging and admin dashboard. Let me know if you have specific preferences for API or UI style. Ready to get started and deliver a solid, privacy-first contact platform.
₹37 500 INR 7 päivässä
5,3
5,3

With my more than 9 years of hands-on experience in web and mobile app development, I have acquired an extensive skill set that perfectly matches your project requirements. Aside from being proficient in Android and iOS development, I also have a deep understanding of backend systems and APIs which can ensure the smooth functioning of the privacy-centric contact flow you're aiming for. This includes not only creating user-friendly interfaces but also implementing telephony integrations like Twilio, Vonage, Plivo, among others for masked calling and messaging. One aspect that particularly draws me to your project is its focus on privacy. As someone who values data protection and security, I can guarantee to build a robust system where users' personal phone numbers are never exposed—replacing that with virtual numbers for all communications through the app - be it calls or messages. Additionally, my familiarity with QR codes and NFC technology will enable me to create an easy-to-use tag management system for your app where users can generate virtual tags, link them to their accounts, and enable/disable them as needed. Furthermore, my services stand out not only for their high-quality delivery but also for providing excellent after-support. Post-project completion, I offer three months of free support to ensure everything runs smoothly. On top of that, my services come at a reliable cost without compromising on quality. Thank you taking the time to con this project
₹56 250 INR 7 päivässä
5,6
5,6

Hello, You’re looking to build a privacy-first QR/NFC communication app that enables masked calling and messaging without exposing personal phone numbers, along with tag management and an admin dashboard. I have strong experience in mobile app development (Flutter + backend APIs) and have worked with telephony/API integrations for secure communication workflows. I can build a scalable architecture with masked calling (via Twilio/Vonage), secure authentication (OTP), QR/NFC tag mapping, and a clean admin panel for analytics and number management. The system will be structured for privacy, reliability, and future scalability. Quick question: Do you already have a preferred telephony provider (Twilio/Vonage), or should I propose the most cost-efficient option based on your target country? Let’s connect for a quick chat to define the technical stack and execution roadmap.
₹60 000 INR 7 päivässä
5,3
5,3

Hello!!! I HAVE ALREADY WORKED ON SIMILAR TYPE OF PROJECT OPEN CHAT WINDOW I WILL SHARE MY WORK Do you want WhatsApp notifications to allow replies directly in-app, or only alert users of a scan? Should offline tag usage via SMS fallback be supported globally or limited to certain regions/carriers? What I offer: ⭐ Native Android & iOS app with secure user registration & OTP login ⭐ QR/NFC tag generation, management, and enable/disable control ⭐ Masked calls, SMS, and optional WhatsApp messaging via Twilio/Plivo integration ⭐ Clean UI/UX with dashboard, scan history, and tag logs ⭐ Admin panel for user management, analytics, and virtual number pool control ⭐ Scalable backend APIs with authentication, tag routing, and reporting With 7+ years of experience in mobile and backend development, I deliver privacy-focused, production-ready communication apps. My approach: Define backend architecture with masked communication routing Implement native Flutter/React Native app for cross-platform support Integrate telephony APIs and ensure secure, privacy-first flows Let’s connect on chat to discuss workflow and timelines. Best Regards, Shaiwan Sheikh
₹38 990 INR 29 päivässä
5,0
5,0

This requires secure architecture and reliable telephony routing from day one. Execution Plan: • Android & iOS app (Flutter or React Native recommended) • Phone + OTP authentication • QR/NFC tag generation and management • Masked calling via Twilio/Vonage (virtual number bridge) • Masked SMS relay + optional in-app chat • WhatsApp notification integration (API-based where supported) • Scan logs, call metadata, history dashboard • Admin web panel for user management, analytics, number pool • Backend API for authentication, routing, analytics Focus: privacy-first routing, secure backend, scalable architecture. Can share similar communication-based system experience.
₹56 250 INR 5 päivässä
5,2
5,2

Hello, I’m a Mobile App & Communication Platform Developer with 7+ years of experience building secure mobile apps, telephony-integrated systems, and real-time communication platforms. I specialize in React Native/Flutter apps with Twilio/Vonage integrations and scalable backend architectures. Your Requirement I read your details and already work on similar privacy-first communication systems. You need a QR/NFC-based mobile app that enables masked calling and messaging without exposing user phone numbers, plus admin dashboard and analytics. What I Will Deliver ✔ Cross-platform mobile app (Android & iOS) with OTP login ✔ QR & NFC tag generation, linking, enable/disable controls ✔ Masked calling via virtual number bridge (Twilio/Vonage) ✔ Masked SMS & optional in-app chat with push notifications ✔ WhatsApp notification integration (API-based where supported) ✔ Scan-triggered contact flow for vehicle/door/public tags ✔ History logs for scans, calls & messages ✔ Web admin panel (users, tags, number pool, analytics) ✔ Secure backend (auth, routing, telephony APIs, reporting) ✔ Clean UI/UX with fast, privacy-first experience I can assure you secure, scalable and reliable communication system. Let’s have a QUICK CHAT to finalize flow and integrations. Thank’s, neha Mobile App & Communication Platform Developer
₹50 000 INR 15 päivässä
5,7
5,7

I need your job and I already know the fastest way to get this privacy first communication platform built correctly. For your project, a mobile app for Android and iOS where users can share QR or NFC tags and receive masked calls or messages without exposing their real phone numbers. The system must include telephony integration, virtual number bridging, tag management, admin dashboard, analytics, and a strong backend architecture focused on privacy Here’s what I will do for your project: Step 1: Design the full system architecture including mobile apps, backend APIs, database structure, telephony integration, masked communication flow, and admin panel structure. Step 2: Develop the mobile app with OTP login, QR and NFC tag management, masked calling and messaging flow, dashboard, logs, and notification system. Step 3: Implement backend services, virtual number routing, analytics tracking, admin dashboard, and deliver a production ready system We can start today and keep delivery moving so you launch a secure privacy platform without delays. Best regards, Shawana
₹50 000 INR 25 päivässä
4,5
4,5

With my extensive experience and skills in full-stack development, particularly for Android and iOS platforms as well as backend expertise, I am confident that I am the right professional to bring your privacy-centric communication app idea to life. I understand the critical importance of privacy in today's digital age and my skillset includes robust knowledge on how to build such secure systems. Creating an app that successfully enables contact without exposing personal phone numbers requires a deep understanding of encryption, APIs integration, and telephony infrastructure. My profile includes years of industry experience which give me a solid edge to handle these aspects with confidence. Moreover, leveraging my Backend skillset, I can ensure smooth user authentication, tag management, masked communication routing - all while maintaining a clean dashboard from where you can easily track tag status and perform analytics for calls/messages/scans. My problem-solving skills coupled with attention to detail are additional assets that would prove valuable in tackling challenges specific to your project like supporting offline tags via SMS fallback or integrating WhatsApp notifications with reply capability. My aim is always to deliver on-time, high-quality work that surpasses clients' expectations - exactly what you can expect from me for your project. Let's create something secure and impactful!
₹56 250 INR 7 päivässä
4,0
4,0

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