Touch phones.
See who you just met.
Hold two phones together and you both see each other's profile, at the same moment. No typing, no scanning, nothing to confirm.
Private alpha: by invitation
Mutual or nothing
A swap only completes when both phones have each other's profile.
You choose what is public
Your name and only the details you want to show.
Kipat cards
Signed cards that Kipat can tell apart from copies.