Every other blocker has an off switch, and at 1am you find it. Pawl has no unlock button: blocking any app or site is instant, but opening it needs a physical security key (any FIDO2 key) in hand, plus a 15-minute wait. Keep the key in a drawer, or give it to someone you trust. No account, no server, no tracking, open source. Free, with optional Pro for schedules and reports. Built by an indie dev who blocks his own Polymarket with it.