While this probably could only be done with the cooperation of Apple/Google, something like what they did for contact tracing during the pandemic would be ideal. Picking up that you were in the proximity of various friends without any active effort.
https://covid19.apple.com/contacttracing
That sounds creepy to me. Taking a photo together doesn't seem like friction to be removed?
That sounds creepy to me. Taking a photo together doesn't seem like friction to be removed?