Current rewritable drives, either rotating or solid-state, leave behind "ghosts" of what was previously written that would allow forensic experts to detect tampering. This write-once drive is just tweak on that. It also depends on trusting the drive manufacturer not to include a back door allowing a rewrite. It's not a bad idea but addresses something that's not a priority, it's not a panacea, and they're the sorta folk that might not commission something compliant in time. Dominion should get something compliant made and, if no one else does the same, they can demand an unhealthy amount of money as the unique supplier.