1. No paper record.
2. No privacy.
A better way would be to use anonymous physical RFID pebbles that are placed in a container to indicate voting preference. Votes can be both weighed and scanned for counting redundancy very quickly.
Mail-in voting would consist of mailing back the pebble chit in an outside return envelope with an inner vote envelope designating the preference; the outer envelope is removed and mixed with many others before sorting.
Then later, no matter how a vote was cast, it's possible to find how a vote was counted (by the voter searching for the RFID code(s) they used) in real-time because all votes were mass-scanned in RFID containers... that is, there will be a number of large containers that contain all votes for a particular preference in a particular election. Subsequent elections reuse the RFIDs to eliminate waste. No hanging chads, no provisional ballots, no hacked voting machines and no voting by mobile.