Case Study – Heita
Heita is a QR code-based smart doorbell system that immediately notifies its users of who’s at their door, regardless of their location. The guests can easily contact them by scanning the QR code with any smartphone, facilitating instant, real-time communication. Heita was conceived as a cost-free alternative to pricey smart doorbells, which are often challenging to set up and depend on a broadband connection.

TECH STACK

CLIENT
Heita
SERVICE PROVIDED
Application Design, Application Development





The Problems
- Outdated doorbells need installation.
- There is no way to contact the homeowner if they are out.
- Smart doorbells can be costly.
- Data Security concerns.

Key Requirements
Our goal was to build an app that generates and assigns a distinct QR code to every homeowner. which can be displayed at the entrance. When guests visit, they can simply scan this QR code with their smartphone, which would trigger an automatic call to the homeowner’s phone. This solution ensures homeowners are accessible to their visitors at any moment, wherever they are..
Our Solution
QR Code
Integration
The homeowners register on the app using a phone number, which will generate a unique QR code. code for them. This code can be simply printed and displayed near the entrance for guests. to scan.
Real-Time
Communication
If no one is at home and there is no way of contacting the homeowner, all that the guests have to do is scan the QR code, which will initiate a call to the owner.
Affordable and
Versatile
The registration and placement of the QR are quite simple compared to other smart doorbells, this budget-friendly option comes as a boon. And bonus, the app runs smoothly on both Android and iOS.
Enhanced Data
Security
Designed with a focus on security, the system guarantees end-to-end encryption and the protection of user data and call records. This is achieved by employing robust security protocols. like SSL/TLS, along with Firebase Security Rules, to restrict data access.
Optimized
Performance
Optimized for performance, the app loads without lag and runs seamlessly on all devices. The app also lets its users give feedback to improve the user experience.

Your doorbell, powered by a single scan
Experience the future of smart home access with Heita. This innovative QR-based doorbell system empowers users with instant notifications, real-time communication, and effortless guest connectivity—without the need for costly setups or broadband. Stay connected, simplify access, and embrace smarter living—wherever you are.




Development Process
01
Discover
User Research /
In-Depth interviews
02
Design
Product Hypothesis /
User Stories
03
Develop
Style Guide /
Hi-Fi Wireframe
04
Deliver
User Interface /
Adaptive Design

Scan, notify, &
connect

Where Every Scan Opens
the Door to Smarter
Connections.
With Heita, every scan is more than just a connection—it’s a step toward seamless communication and smarter living. Discover the future of accessibility and let innovation simplify your life.

Answer your door
from anywhere
Results

The app uses WebRTC, which enables high-speed audio/video communication and data sharing between browsers and mobile applications over peer-to-peer networks with minimal latency. Using Firebase, the system ensures instant data synchronization and effective user authentication through Firebase's real-time database and authentication. It focuses on security and uses SSL/TLS and Firebase security rules for full data encryption and privacy. This secure framework allows customers to reach homeowners using a separate QR code, leveraging the capabilities of WebRTC and Firebase.
95% user satisfaction rate
50% improvement in accessibility
Enhanced security with encrypted communication.
Reduced dependency on traditional doorbells.
AWS services used
Amazon EC2
To host the email services