A PIN is an additional security feature available in Windows 10 and Windows 8.1 to protect your user account and all the sensitive data inside it. When enabled, it can be entered instead of the password. Unlike a password, a PIN does not require the user to press the Enter key to sign in and it can be a short 4 digit number. Once you enter the correct PIN, you will be signed in to your Windows 10 account immediately. You can specify the number of past PINs that can’t be reused for a user account. Here is how it can be done.
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