Is there a way to show the log in password if you have the fingerprint but don’t remember the password?

The computer password is required to activate and user the Touch ID function.

Although - the password may or may not be stored on the computer - one can not get to the information without it ( password )

Reset Computer Password 

Intel Computer

1 - Restart computer and immediately hold Command + r keys

2 - Top Tool Bar >> Utilities >> Terminal

3 - Type resetpassword as one word and no spaces

4 - Press Return key

5 - Follow the prompts and remember the New Password

Apple Silicon M1 Computer 

1 - Choose Apple menu > > Shut Down.

2 - Press and hold the power button on your Mac until you see “Loading startup options.”

3 - Click Options, then click Continue. 

4 - Top Tool Bar >> Utilities >> Terminal

5 - Type resetpassword as one word and no spaces

6 - Press Return key

7 - Follow the prompts and remember the New Password

The macOS password is hashed (a one way scrambling of the password that cannot be reversed).

when you enter your password to unlock your mac, the password is hashed the same way and compared against the stored hash.

The login code will not accept the has as input, only the password, so it is possible to know the hash, but not be able to use it.

And so there can be no lookup table of known passwords and hashes, each time you change your password, a unique “salt” is created which us used in the hash algorithm to randomize the hash, so that every user that decides to use the password “123456” will each generate a unique hash value.

Because of the unique “salt”, that means the only attack is a brute force attack, trying all password combinations. But macOS locks the account after too many login failures.

You cannot get your password back. You can only reset it to a new value. And to do that, if you have FileVault enabled is to know your FileVault encryption key, or to have allowed macOS to encrypted it with your Apple ID password, then stored in iCloud.

mbim246 wrote:

Thank you for the answer.

I’ve tried that. Unfortunately there is no utility button but asking for a recovery key which I don’t have.

is the password not stored somewhere within the computer? I can use the fingerprint to unlock it after it was in sleep modus. So where could I access this info please?

Yes, the fingerprint to wake from Sleep will work but to get the computer into Sleep Mode requires the user to Firstly Input the computer password to Activate this Fingerprint Function.

One booted into Recovery Mode

Top Tool Bar >> Utilities >> Terminal