There's some really small precincts here - 7648 (on the island on the SF-Oakland bridge) with I think just 3 voters or 7933, with 5. Doesn't this level of repo

There's some really small precincts here - 7648 (on the island on the SF-Oakland bridge) with I think just 3 voters or 7933, with 5. Doesn't this level of reporting endanger the secrecy of the ballot?