Sets the maximum length of the lock screen PIN

If the policy is set, the configured maximal PIN length is enforced. A value of 0 or less means no maximum length; in that case the user may set a PIN as long as they want. If this setting is less than PinUnlockMinimumLength but greater than 0, the maximum length is the same as the minimum length.

If the policy is not set, no maximum length is enforced.

Sets the maximum length of the lock screen PIN:

Registry Hive	HKEY_CURRENT_USER
Registry Path	Software\Policies\Google\ChromeOS
Value Name	PinUnlockMaximumLength
Value Type	REG_DWORD
Default Value
Min Value	0
Max Value	2000000000