If you could re-vote as many times as you’d like, then this would largely destroy coercion since the coercer would have to control you or your device during the

If you could re-vote as many times as you’d like, then this would largely destroy coercion since the coercer would have to control you or your device during the rest of the voting period. That alone would significantly reduce this risk. For more complex scenarios, you could allow the user to enter his/her PIN backwards which would mean “silently ignore this vote.”