OLC
Ver wikipedia:Open Location Code - Ver tentativas no OSM de usa-lo https://wiki.openstreetmap.org/wiki/Proposal_Open_Location_Code
Demo https://cvzi.github.io/open-location-code-demo/
Ver algoritmo de encurtamento e caixa preta do PlusCodes. https://en.wikipedia.org/wiki/Talk:Open_Location_Code#PlusCode_is_not_OLC