What makes a good PIN
- Length: 6 digits is the modern minimum (1 in 1,000,000 guess rate). 4-digit ATM PINs persist for legacy reasons but should be retired wherever possible.
- No predictable patterns: 1234, 1111, 0000, 1990, 0511 (year / DDMM) are guessed in seconds. The toggles above filter these out.
- Independent per service: don't reuse a PIN across bank card, phone unlock and door access.
Privacy
The PINs are generated by your browser using crypto.getRandomValues(). The page never sends them anywhere — open DevTools → Network if you want to verify.