You might be thinking of a "fraud alert", which is different than a "credit freeze" => https://www.consumer.ftc.gov/blog/2017/09/fraud-alert-or-cre...
It seems like they could be complimentary since a creditor needs to call you to get approval before extending credit in your name. With both of these even if your credit was unlocked the credit issuer would still be required to get your verbal approval.
Ummm no those freezes are there to stay and gives me some piece of mind!