Is there another technique for effortlessly bootstrapping a contact list? Finding someone requires some kind of lookup/search. Using PII makes a lot of sense because that's how people identify each other. Anything out-of-band is quite complex.
If I told my mom to install some app and we'd connect to each other using some random IDs, we'd probably still be using SMS.
If I told my mom to install some app and we'd connect to each other using some random IDs, we'd probably still be using SMS.