Quantum Surveying Nov 3, 2021 20:08:16 GMT Brent George and Mark Geddes like this Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Ian Gillespie on Nov 3, 2021 20:08:16 GMT Sandia Labs shows quantum based wayfinding deviceI don't pretend to understand this,- but it sounds cool and may at last be a solution to trees.Quantum Surveyingwww.gpsworld.com/sandia-labs-shows-gps-free-quantum-based-wayfinding-device/