New account

Choose what only you
will recognize.

Pick a grid size, then in each row tap one symbol to remember. Leave a row on Neglect to type any number there at login. At least half the rows must hold a symbol. We store only a salted hash, never your symbols.

Username

Email — optional in demo

How do you want to log in?

How do you want your symbols?

Grid size — bigger = stronger, but more to scan

Your symbols

Advanced security — optional, for shoulder-surf protection›

This makes it harder for someone watching you to reuse what they saw, at the cost of a little guessing-strength. It's off by default. Only turn it on if you can remember the extra rule.

Rotating start row. You may begin entering from any row and wrap around (e.g. start at row 3, then 4, 1, 2). A watcher who memorizes one session can't simply replay it.

Honest note: this lets the server accept more entry variants, which slightly lowers raw guessing-strength (~2 bits). Worth it if your main worry is someone watching; skip it if you'd rather keep it simplest.

Already have an account? Log in · Test the strength first

salted-hash storage · single-use board
A working demonstration of the PassNumber method. Your symbols are never stored — only a salted hash is.

Choose what only youwill recognize.

Choose what only you
will recognize.