Hacker News new | ask | show | jobs
by latchkey 558 days ago
The app shows your face on it and says it is 21+.
1 comments
quesomaster9000 557 days ago
That isn't a challenge/response flow, that's the app on your device asserting something in isolation.
link
latchkey 557 days ago
The challenge is from the security guard who won't let you into the club without proof that you're 21+.
link