Interactive demo
No sign-up, no install — this runs entirely in your browser. Pick a few symbols, then watch how the grid reshuffles when you log in. Takes about a minute.
In each row, click one symbol to remember. For at least one row, click Neglect instead — you'll type any number there at login.
The symbols moved. Find each one you remembered and type its new position number. For your neglected row, type any number.
That's the whole idea — easy for you, different every time for anyone watching.
This demo verifies everything in your browser for illustration. The real app stores only a salted hash on the server and never your symbols. See how it works →