O Touch ID MacBooks Air / Pro win a new role in macOS Mojave 10.14.4, which won its first beta version a few days ago.
From that next update, users will be able to configure the Safari so that forms are only filled in automatically (AutoFill) through biometric authentication.
The novelty will be the fourth function of Touch ID on Macs, which can now unlock the computer, carry out transactions through Apple Pay and authenticate purchases on the iTunes / App Store.
Obviously, Touch ID can also be used by third-party apps. A very famous one that already supports the fingerprint reader and serves the same thing as the AutoFill Safari's 1Password, which for me has become infinitely more practical that way.