Anonymous and verifiable voting systems
A little bit of a contradiction here. How would you know what one identity, one person is, without an authority like a registration office?
or better put, how would you prevent a person from voting twice or multiple times? (let's call this the double-voting problem)
though it indeed is an interesting philosophical question what an identity is. if I'm a programmer at day and a rockstar at night, do i have two identities?
I think that if you could vote anonymously and online, being able to verify and audit the votes, it would be quite perfect even if you still had to use a central authority for registration.
Decentralized identity and reputation systems are quite difficult to achieve but people are working hard on that, for sure.
Still I think we overestimate the importance of secrecy in voting. And we should be preparing good platforms for when the time comes that we have the perfect voting systems.