How does face ID work on your phone?

Have you ever wondered how your phone magically recognises your face? Face ID might feel like something straight out of a spy movie, but it is actually a pretty smart mix of tech and science. Let’s look at how it works and whether it is secure.

 

Not just a selfie camera

Face ID doesn’t just take a flat photo of your face like a regular selfie; instead, it maps your face in 3D using about 30,000 tiny invisible dots. These dots create a detailed map that is harder to fake than a simple photo. This is why Face ID can still recognise you even if you grow a beard, put on glasses, or look half-asleep in the morning.

 

Infrared magic for low light

Have you ever unlocked your phone in a pitch-black room? This is possible because Face ID doesn’t rely on normal light; instead, it uses infrared technology, meaning it works in total darkness. This also makes it more secure, as infrared picks up unique facial details that are not visible in a regular photo.

 

Machine learning makes it smarter

Face ID actually learns over time. If you start wearing glasses, grow a moustache, or switch up your makeup routine, it adapts to your changing face.

 

Is face ID safe?

In short, yes. Your facial data is stored only on your phone, not in the cloud, so it can’t be hacked remotely. What’s more, the odds of someone else having a face similar enough to trick your phone is about one in a million. For extra security, pairing Face ID with a multi network SIM from a provider such as www.lister-communications.co.uk/business-mobiles/multi-network-data-sim-cards ensures your device stays connected across different networks, keeping your data safe even when you are travelling or switching providers.

 

Final thoughts

Face ID is fast, secure, and smarter than you might think. Thanks to infrared tech, 3D mapping, and machine learning, it adapts to you, so you can unlock your phone no matter the circumstances. With a multi network SIM, you can keep this secure connection wherever you go.

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