Bigstrum
Bigstrum
Bigstrum
Book Consultation
All Case Studies
02·Smart City·Mobile + Web·2023
DDN

Digital Door Number System

City-scale QR property identification deployed across thousands of properties

Industry

Smart City

Project Type

Mobile + Web

Year

2023

Stack

5 technologies

Overview

A municipal authority needed to assign unique digital identities to every property in the city as part of a broader smart city initiative. The challenge wasn't just generating QR codes — it was coordinating hundreds of field installers, verifying ownership, and giving administrators live progress visibility across an entire city.

Challenges
  • 01

    Coordinating and tracking thousands of field installations across city zones

  • 02

    Verifying property ownership records against existing municipal databases

  • 03

    Generating tamper-evident QR artefacts tied to specific property records

  • 04

    Providing real-time rollout progress to city administrators

Solution

Web platform for QR artefact generation and installation monitoring, plus a Flutter mobile app for field teams.

Outcomes

Full city-wide rollout completed ahead of schedule

Field team productivity improved with offline-capable mobile app

Ownership verification errors reduced by 85% vs. manual process

Live progress dashboard adopted by city planning department

Project Details

Industry

Smart City

Type

Mobile + Web

Year

2023

Reference ID

DDN

Tech Stack

AngularSpring BootFlutterPostgreSQLAWS

Ready to build?

Start a similar project

View all case studies

Next Case Study

03·Government

Land Acquisition Management System