Google HAS to block this and prevent it from ever being run if it can, its click fraud plain and simple and they've been stung too many times with huge bills for fraud it could have prevented and didn't.
Two systems. One assigns a unique a temporary code to you on arrival at the polling station, much like those "take a number" queues at places. Then another unconnected voting system with printable receipt.
Step 1) You queue, get a "Temporary Voting Id"
Step 2) Enter the booth, enter your "TVID"
Step 3) Vote
Step 4) The Machine prints your Receipt with your vote clearly visible and your TVID as local proof its you and your vote is right.
Step 5) You fold your printed ballot and put it in a box.
Step 6) You fold your ID Receipt and place that into a "Validation Box" as you leave.
Step 7) All machines keep and print a "Tally" used as the count.
Step 8) All ballots and validation id's are saved in boxes and shipped ready for recounts if needed, ID's can be matched to ballots to validate attendance and votes anonymously.
Bonus Step) ALL vote machine should produce a "Vote Audit" when asked that will show a full history of votes (without times and in random order) and the ID's used and ALL id generation machine should produce all vote id's generated (again without times and in random order)