I want o bid on a MAC at an auction that is unlocked(?) but has unkown Apple passwords

djrslk wrote:

I want o bid on a MAC at an auction that is unlocked(?) but has unknown Apple passwords

I would not do it.

If this is a Mac with a T2 Security Chip, there may well be no way to make this yours.

Mac models with the Apple T2 Security Chip

How do you know it is "unlocked" given you don't know the passwords? Little risky in my opinion.