If you work with a system that requires a unique password, you would be VERY WELL SERVED to go find some other system, because if it even knows what your password is, it’s VERY BADLY CODED. Passwords in any reasonable system are stored as an un-reversable HASH of the password. They check to see if you got it right by hashing what you put in the same way… and checking if the hashes are the same. Unique username is not quite as bad (though you will note that social media do not require it). I generally use my (throw away) email account for that.
If you work with a system that requires a unique password, you would be VERY WELL SERVED to go find some other system, because if it even knows what your password is, it’s VERY BADLY CODED. Passwords in any reasonable system are stored as an un-reversable HASH of the password. They check to see if you got it right by hashing what you put in the same way… and checking if the hashes are the same. Unique username is not quite as bad (though you will note that social media do not require it). I generally use my (throw away) email account for that.