Yes. After this feature is turned on, the Redmi Watch 4 will activate the password lock screen when it detects that it is not being worn. To ensure information security, the password is a 6-digit number in the combination of 0-9.
For your reference, here are some details about device password:
1. On the watch side, you can go to [Settings] >> [PIN] >> [Set PIN] >> set the password.
2. You can also go to the [Mi Fitness] APP >> [Device] >> [Set Password] >> set password.
3. If you forget the device password, the watch cannot be unlocked and you need to operate through the APP. Keep the watch connected with the Mi Fitness APP first, and go to the [Mi Fitness] APP >> [Device] >> [Set Password] >> choose [Close Password]/[Change Password].