NFC PROOF OF MEETING
THE INSIGHT
In the crypto and web3 space, sybil attacks are everywhere. Bots farm airdrops, fake accounts inflate metrics, and trust is hard to establish. But there's one thing that's still very hard to fake: actually meeting someone in real life.
If we could prove that two people physically met, we'd have a powerful signal of authenticity. That proof-of-meeting could anchor a professional network where every connection represents a real interaction.
APPROACH
We built NFC cards that you'd tap against someone else's phone when meeting at events. The tap created a cryptographic proof that both parties were in the same physical location at the same time.
These proofs were stored onchain as verifiable credentials. Your network became a web of real-world meetings, resistant to the spam and fakery that plague traditional social networks.
WHAT WE LEARNED
The technology worked, while the interaction asked people to pause a conversation and complete a deliberate tap. The graph and trust signal were valuable, and later versions explored less interruptive ways to create them.
MY ROLE
STATUS
THE DESIGN
Testing the proof-of-meeting concept at crypto's premier Farcaster event with a FarCon NFC card
Premium black NFC cards for early adopters and VIP events