🔄 Reverse DIGIPIN Lookup — Decode Location from a 10-Digit Code

After launching the DIGIPIN Generator that converts latitude and longitude into a unique 10-digit alphanumeric code, it’s time to introduce the much-awaited companion feature: DigiPin Reverse Lookup – Decode Lat/Long from DigiPin!

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📌 What Is DIGIPIN Reverse Lookup?

The Reverse Lookup API lets you input a valid DIGIPIN like 39J-34T-T563 and get back the approximate latitude and longitude it represents.

This feature is helpful if you’ve been given a DIGIPIN but don’t know where it maps to geographically.

🧪 Example Request

POST /api/digipin/decode
Content-Type: application/json

{
    "digiPin": "39J-34T-T563"
}
    

📬 Example Response

{
    "latitude": 28.6748,
    "longitude": 77.2187
}
    

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🌐 Live Demo (UI)

The public dashboard has been updated with a Reverse Lookup form, where users can paste their DIGIPIN and view the decoded coordinates. The UI is built using ASP.NET Core Razor Views with Bootstrap 5 styling.

🔗 Try Reverse Lookup UI

Users can:

• Enter a DIGIPIN
• Submit and decode it instantly
• See the latitude and longitude
• Copy the coordinates using a one-click button

Here’s what the UI looks like:

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🔐 Input Validation & Messaging

The UI and API both validate inputs. A valid DIGIPIN must:

• Be exactly 10 characters long (excluding dashes)
• Use only supported characters

Feedback messages include:

• DIGIPIN must be exactly 10 characters
• DIGIPIN is invalid or could not be decoded
• Latitude = 28.6748, Longitude = 77.2187

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🧱 Technical Stack

• ✅ ASP.NET Core 9 Web API
• ✅ Razor Pages (MVC)
• ✅ JSON-based REST endpoints
• ✅ Bootstrap 5 styling
• ✅ JavaScript clipboard interaction

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🛡️ Privacy First

Just like the generator, no user data is stored. All lookups are processed in-memory and nothing is logged or saved to a database.

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🚀 Future Enhancements

• 🗺️ Show decoded coordinates on a real-time map
• 📤 Upload and decode multiple DIGIPINs in bulk
• 📄 Export results as CSV or PDF
• 🔑 Add authentication and API rate limits

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💬 Feedback & Collaboration

I’d love to hear your feedback or suggestions! Feel free to explore:

• 💻 APIverse UI Dashboard

Happy decoding! 🌍

🔐 Introducing DigiPin Generator – Powered by APIverse

In an increasingly digital world, accurately representing physical locations is critical — from deliveries and public services to smart city solutions. Enter DigiPin — a 10-character alphanumeric geocode that uniquely represents a latitude-longitude pair within India’s bounding box.

We are excited to share the DigiPin Generator API, built as part of the open-source APIverse project — a centralized API hub for reusable, modular microservices.

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🚀 What Is DigiPin?

DigiPin is a custom geolocation encoding system that takes in latitude and longitude coordinates and returns a compact, user-friendly code like:

39J-34T-T563

Unlike complex coordinates, this format is:

• ✅ Easy to remember
• ✅ Hard to mistype
• ✅ Space-efficient
• ✅ Consistent across levels of precision

It uses a quad-grid encoding method over India’s bounding box (Lat: 2.5–38.5, Lon: 63.5–99.5), refining precision over 10 levels.

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🔧 What Is APIverse?

APIverse is our public .NET-based API platform where we plan to host various utility and productivity APIs. It is:

• Built with .NET Core Web API
• Fully modular and extensible

It currently hosts the DigiPin API, with more APIs planned.

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📬 How to Use the DigiPin API

Endpoint:

POST /api/digipin

Request:

{
  "latitude": 28.67,
  "longitude": 77.21
}

Response:

{
  "digiPin": "39J-34T-T563"
}

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💻 User Interface

To make it user-friendly, a public UI dashboard is also available at:
👉 http://apiverse.runasp.net/

From this dashboard, users can:

• Enter latitude & longitude
• Generate and view DigiPins
• Copy the result to clipboard
• Access future APIs as they’re released

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🔐 Security & Hosting

Both the API and UI are deployed using reliable ASP.NET hosting. We ensure:

• Input validation
• Logging for request tracking
• Cross-origin support (CORS) for public web access

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🔐 No Data Storage – Your Privacy Matters

We do not store any user data. No coordinates or DigiPins are saved or logged. The API is completely stateless and focused on real-time usage with full privacy.

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🔮 What’s Next?

We're planning to integrate:

• Reverse DigiPin decoding
• Nearby DigiPin search
• Additional public APIs under APIverse (e.g., utilities, geospatial, governance)

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🤝 Get Involved

APIverse is designed for public use and developer collaboration. Future updates and documentation will be shared as the project evolves.