Help "Enter the recover password to unlock"

[Dineshka]

The device is set to four digit pin mode and when pulled from pocket today the screen shows "Enter the recover password to unlock"
with no keyboard to enter the password. can anyone suggest how to enter the password or comeout of this with out loosing all the data?
Thanks

 

[Digital Controller]

When you try to start typing in the pin box does the keyboard come up?

Any idea what caused this to happen?