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Your postcode becomes a topo map of the hills you actually live in

Your postcode becomes a topo map of the hills you actually live in. That's the pitch from /u/delicious3141, and it's the kind of idea that makes you wonder why nobody thought of it sooner. A tool that takes the abstract, government-issued string of letters and numbers you call an address and turns it into something tactile, a contour map of the terrain right under your feet. It's not a gadget you plug in. It's a shift in perspective. Suddenly your neighborhood isn't just a grid of streets; it's the ridge you walk your dog on, the valley the school sits in, the slope that makes your bike commute a workout. For anyone who's ever looked at a flat map and felt a little lied to, this scratches an itch you didn't know you had.