I mean it's using bluetooth. There are known vulnerabilities but if you keep your phone up to date those have been patched. We try doing it in places with crowd

I mean it's using bluetooth. There are known vulnerabilities but if you keep your phone up to date those have been patched. We try doing it in places with crowds: arenas, restaurants, airports, and buses. It can be a nice ice breaker if the receive isn't paranoid, or socially awkward.