Well, IMHO a good way to digitize voting would be to give out a USB-drive-like (NFC) device with an option to set a value and lock it in the read-only mode using voter ID.
How it will work:
A person gets this device in the voting center enters/gets his voter ID, does the voting (anonymously), presses the read-only lock and throws it into the bin. After all the voting these device are scanned and voting data is retrieved. A voting database is populated in each center in a transparent way, to prevent tampering (several parties can be allowed to read this data separately and then all data variants can be compared against each other, just in case). After consensus on the voting data, each voting center sends the results for counting. And the voting is completed.
In the end, these devices are reset and the cycle continues.
Well, I'm sure that there must be some problems when voting the aforementioned way. But I guess it could work out, with some modifications.
How it will work: A person gets this device in the voting center enters/gets his voter ID, does the voting (anonymously), presses the read-only lock and throws it into the bin. After all the voting these device are scanned and voting data is retrieved. A voting database is populated in each center in a transparent way, to prevent tampering (several parties can be allowed to read this data separately and then all data variants can be compared against each other, just in case). After consensus on the voting data, each voting center sends the results for counting. And the voting is completed.
In the end, these devices are reset and the cycle continues.
Well, I'm sure that there must be some problems when voting the aforementioned way. But I guess it could work out, with some modifications.
EDIT: Grammar.