simple-digipinruns on your device
Drag the map until the pin sits on your gate. Zoom in to see the 4 m squares.
Address card
Drop the pin to build a card a courier can use.
Nothing leaves your device
Your location, the pin, the code, and anything you type stay in this browser. There is no server and no account. Map tiles come from OpenFreeMap, which sees which map areas you view, not your pin or your code.
How a DigiPIN works
A DigiPIN is 10 characters. Each one picks a cell in a 4 by 4 grid laid over the previous cell, starting from a box around India. After ten picks the cell is about 4 m across. Decoding runs the same steps backwards, so the code is coordinates in disguise. It does not know your building, floor, or gate, which is why those fields are here.
Algorithm by India Post, Apache-2.0. Not affiliated with India Post. Official source.