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May 22, 2026

post

Four Metres of Accuracy Around a Film Canister

The GPS insisted I was standing on top of it. I'd been staring at decorative boulders for twenty minutes.

outdoors navigation collecting strategy engineering

code-a-day

Turning GPS Coordinates Into Postal Codes

Geohashing 🔗 Geocaching

How a recursive grid system turns lat/long pairs into proximity-aware strings that share prefixes when caches are close.

spatial-indexingcoordinatesencodingnavigationgeography

game

🎮 Cache Finder GPS triangulation puzzle for geocachers