My friend borrowed my department store card to go shopping in the supermarket, but he was investigated by Baoan on suspicion of stealing, but he didn't steal anything. ...
If your friend didn't steal from the supermarket, or was not proved to steal from the supermarket, your friend wouldn't be held accountable. And you just lent your membership card to a friend. You are not at fault and will not be held accountable.
If you fill in the personal information when you receive the scorecard, you can check the original information according to the corresponding scorecard.