FaceID vs TouchID

Regarding the iPhone X vs previous models, so far I prefer TouchID to FaceID.

TouchID is something I learned to forget about. I trained multiple fingers on it, so even if the phone was lying flat on a desk and not facing me face, my finger successfully unlocked the phone without me thinking about it at all.  Now, in that flat on the table position, my phone requires my code because my face is not within view. That takes a lot longer.

I like everything else about the iPhone X, especially the battery life and better use of screen real estate. The absolute best new feature is wireless charging (not new to Android, but new it iPhone), but you can also get that on the iPhone 8.

FaceID works great when your face is in view.  It’s every bit as convenient as TouchID 90% of the time, but I do notice that 10% when I’m not looking at the phone directly when I unlock it.

Two steps forward, one step back. Do you agree?

file under: Blog
  • Clement Cazalot

    Three steps forward, no steps backward IMHO. In terms of 2FA, they have achieved a fantastic milestone: the system learns from its failures, in order to improve overtime! Your 10% from a weird angle, will go down as time goes on. Only a handful of enterprise grade multi factor authentication are behaving this way.

    “To improve unlock performance and keep pace with the natural changes of your face and look, Face ID augments its stored mathematical representation over time.
    […]
    Conversely, if Face ID fails to recognize you, but the match quality is higher than a certain threshold and you immediately follow the failure by entering your passcode, Face ID takes another capture and augments its enrolled Face ID data with the newly calculated mathematical representation.”
    src: Apple Face ID Security Guide – https://images.apple.com/business/docs/FaceID_Security_Guide.pdf

    (Yes, I did some research before starting to use Face ID #securitynerd)