Decypher

Decypher is an iPhone app made for the curious walker — the kind of person who strolls through a UK town, spots a quirky old post box on the corner, and immediately wants to know whose reign the little royal cypher actually belongs to. It uses your iPhone's camera and AI to identify and serve up context about post boxes and other pieces of British street furniture.

Specifically, it zeroes in on the 'royal cyphers' and distinctive shapes of these objects, then reveals the historical and neighborhood context behind them — who put it there, when, and what was going on at the time. It's a little portable history guide for Britain's streets, and it's genuinely great company for travelers, local history fans, and anyone who enjoys turning a normal afternoon walk into a mini-exploration.