🎓 Doc Freemo :jpf: 🇳🇱@robryk you would need a map of the magnetic fields, a high accurate sensor, and you'd not even approach GPS level accuracy.. but its doable in theory yea.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.