Here’s how to erase Touch Bar data on a recently erased Mac: Want to clear out all Touch ID information and configuration data from a Mac with Touch Bar? Remember, this may cause data loss therefore only do this if you intend to erase all data on the Mac. How to Erase Touch ID Data on MacBook Pro with Touch Bar This is for advanced users only who want to remove all data from their Mac.
Therefore do not run this command unless you already intend to completely erase the Mac, for example during sale or transfer to another owner, and after you have already erased all data on the Mac hard drive. By clearing data from the T2 security chip it also clears the ability to authenticate with stored credentials. Warning: Performing this action may cause permanent data loss or data inaccessibility, particularly with newer Macs with T2 security chips. Aside from those situations there is likely no need to ever delete or erase Touch Bar data on the MacBook Pro with Touch Bar, and attempting to do so can lead to unintended problems or data loss. This is obviously only applicable to Macs with the Touch Bar, and it’s probably only appropriate if you plan on erasing the Mac anyway, reinstalling MacOS, resetting a Mac to factory settings, or some other similar situation where you either want all personal data removed from the Mac, or you are going to be selling a Mac or transferring ownership, or even sending it in for service.
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