Contact Detection Project

Hmm. So basically, intervention from the operator is needed.

Again, I’m not saying Tutela and others already do that with the frequency and precision you need, but they already are a lot steps taken from scratch.

Server may be outside the operator.
These heartbeats already exist from Facebook, google, etc…
Not as frequent as you want, off course.

Could you please refer me to some links on this. Sounds great idea actually.

All the info from Tutela is from their product, maybe in their website you can find more info.

https://www.tutela.com/methodology

Or maybe reach them directly to ask for more details

Regarding the heartbeat, then it would require some googling to find more details, but this is the very basic.

http://250bpm.com/blog:22

I believe Facebook have something similar to Tutela.

Connect testlab - they also do it, combined with DTs: