Using proximity triangulation, similar to <a href="https://techcrunch.com/2013/11/01/airlike/">something like Airlike</a>, MoID is an iOS and Android app which attempts to remember people you've met (
Similar to <a href="https://techcrunch.com/2013/09/16/bump-mobile-contact-sharing-app-acquired-by-google-will-stay-alive-for-now/">Google-acquired</a> Bump, <a target="_blank" href="http://airlike.me"