SECURITY CHECK (appears after 2-7 days)
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'a-z': The letters a to z.
'[' (to the right of 'p'): The letter .
']' (to the left of 'Delete' and 'Return'): The letter .
'@' (to the left of 'Return', just above 'Right Shift'): The letter .
'Backspace': Delete last character.
'Return', 'Enter': Exit the security check (after you have typed the password).

'Space': Lock/unlock scrolling.
