For many years now phones have come with the humble Fingerprint reader as the preferred method for securely access your phone. Recently however, there have been developments with newer technologies like FaceID, Iris scanning and in-screen fingerprint readers becoming more common. Today we will try to explain the differences between each of these.

FaceID

First introduced by Apple in 2017 with the iPhone X, FaceID replaced the previous Fingerprint reader based TouchID. Using what Apple calls a 'True Depth' camera system, the iPhone uses a small infrared light to projector over 30,000 points of light invisibly onto your face. These are mapped by the front-facing camera, and then stored securely on the phone. In practice its pretty magical, a quick glance at your iPhone is enough to unlock it, and it won't be easily fooled by photos or twins. Due to the use of the infrared light, it also works in the dark, meaning you won't annoy your partner if you decide to check your

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