You don’t want a thief to be able to log-into your PSN account, but luckily you can control it all online. … Go to Sign In and select Media > Devices on the Account tab. Select Deactivate All.

Can you put lock on PS5?

On the PS5 home screen, select Settings (the gear icon in the upper-right). Scroll down and select Users and Accounts. Scroll down to Login Settings. Select Set a PS5 Login Passcode.