P2P E2EE location sharing app instead of Find My

blankdot

It would be great to have a P2P privacy-focused location sharing app with no middle-man server needed, that would come in handy to keep trusted family/friends sharing location for Find My Device situations and personal safety/security.

It can leverage torrent/syncthing type protocols to cut out the middle man servers, and be E2EE encrypted like Signal messages.

abcZ

There generally has to be something in the middle (including for torrents/syncthing), or your 2 endpoints won't be able to find each other.

This could satisfy you or at least give you a starting point; https://gitlab.com/eneiluj/phonetrack-android

available via f-droid
not updated recently

This uses a server running nextcloud as the "middleman". But nextcloud is open sourced, so you can self-host it (I.e. run it on hardware you own, maybe in your home).

I can't vouch for the code quality, so it might only be a starting point.

blankdot

abcZ interesting. But then I suppose if the endpoints encrypt the data, it would be a nice OS-level feature.

Thanks for the feedback

Eirikr70

If you are comfortable with computers you can self host Hauk, which would be the man in the middle on your own server.

blankdot

Eirikr70 I was looking for something as easy as syncthing to setup, without the need for a middle man too. Just the endpoints encrypting their location. Thanks for the feedback

dm_

I know this is an ancient thread, but I have long wanted something similar, so I made one: https://github.com/danmarg/where.

There is a centralized server--I think doing this fully peer-to-peer is hard (happy to discuss that design choice more)--but message contents are fully e2ee and it uses anonymous routing tokens to try to limit leaking the social network to anyone doing traffic analysis.

The protocol is heavily inspired by the Signal protocol; you can read a summary here and the full white-paper in the github link above.

I probably should submit to F-Droid, but it's in the Play and Apple stores--linked here: https://where.af0.net/

-- Dan

Dan-Jessen

I think the guys at peerloom have made one that is p2p. Same functionality as PearPass and PearCal. Worth a look