NFC Worldcoin Vote

Screenshots

Problem Statement

User can vote IRL for DAO proposals with a wristband. Worldcoin verifies that it's a real human.Unfortunately I couldn't finish the whole app on time, because my first idea was related to rewriting the NFC chip itself to lead to a different URL, and then I realised the NFC wristband is protected for writing, so I pivoted to more simple idea .

Solution

I extract ethereum signature from ETHBrussels wristband through using the library Libhalo called from mobile React Website through touching the wristband .Then user Sign In with Worldcoin to authenticate it's not a sybil .Then user can vote for DAO proposals IRL with a wristband by using the earlier extracted signature