3 ms·
read something about it a long time ago, so fwir : the accelerometer gives you a motion angle of the « bump », and finding the symmetrical motion in a given tim
by bsaul 8y ago
read something about it a long time ago, so fwir : the accelerometer gives you a motion angle of the « bump », and finding the symmetrical motion in a given time window gives you the other phone involved in the bump.
- jakobegger 8y agoI don't think the "angle" of the bump played into it, since accelerometers only give you relative angles, not absolute values. And the compass isn't precise enough.
- bsaul 8y agohttps://web.archive.org/web/20111219235527/http://bu.mp/faq https://web.archive.org/web/20111219235527/http://bu.mp/faq