The problem with this system is that it's possible to prove to someone else who you voted for.
Voting needs plausible deniability so you can't be coerced or bribed into voting for a particular candidate as was alleged to happen in the Balkans many times: https://en.wikipedia.org/wiki/Bulgarian_train
Voting needs plausible deniability so you can't be coerced or bribed into voting for a particular candidate as was alleged to happen in the Balkans many times: https://en.wikipedia.org/wiki/Bulgarian_train