> TrueCaller is Facebook's face recognition for phone numbers
This is very good analogy - in fact I think that it's even more dangerous because when it comes to Facebook people are slightly more aware about privacy-related issues.
I'm pretty sure that TrueCaller extensively profiles users, links all possible connections, gathers data - Facebook might not know that one visited certain doctor or that one has some medical conditions, TrueCaller? Who knows. It is possible to gather a lot of data and build detailed profile just by linking who calls who.
Additionally according to HN comments [0] one doesn't just simply "opt out", truly terrifying
This is very good analogy - in fact I think that it's even more dangerous because when it comes to Facebook people are slightly more aware about privacy-related issues. I'm pretty sure that TrueCaller extensively profiles users, links all possible connections, gathers data - Facebook might not know that one visited certain doctor or that one has some medical conditions, TrueCaller? Who knows. It is possible to gather a lot of data and build detailed profile just by linking who calls who.
Additionally according to HN comments [0] one doesn't just simply "opt out", truly terrifying
[0] https://news.ycombinator.com/item?id=20058218