[KCUOJJQJ]

Can the pin be 1111? I use a similar pin for the app Threema. Better than nothing I guess and easy to remember. (Also, after restarting the device I have to enter a complicated password.)

Edit: Now I see. Signal wants to save data in the cloud. My Threema PIN is just for my device.

[thekyle]

I don't think so. They blocked common pins like 1234, 1111, 0000, etc.

[genpfault]

Alphanumeric PINs are all valid though, such as 'OOOO'.

[scatters]

Yes, 'aaaa' works. Sweet!