Proof of Personhood play online

One element in bringing back trust to the internet is to be sure that a single person can only vote once. Proofing this electronically is extremely difficult, because it is very easy to setup multiple accounts and get multiple telephone numbers.

The https://dedis.ch team at https://epfl.ch found an interesting way to prove that you are unique: you need to show up physically at a gathering and get your public key scanned.

Based on this principle, the personhood2 app lets you handle your identity, exchange it with other persons, and interact with the byzcoin-blockchain from the DEDIS-lab.