iphone 5

Touch ID can be programmed to recognise up to five fingers (they can be just yours or yours and trusted other people). All you have to do is hold your finger to the sensor repeatedly, while the iPhone 5S builds up an image of what your print looks like. You're prompted to move your finger around, to get full coverage, and even to use the side of your finger so that you can use Touch ID from pretty much any angle. With that done, you're ready to go.

Touch ID lets you register up to five finger prints, which can include prints from different people We have to say that it works pretty much flawlessly, at any angle and, impressively, any rotation, so you can even tap Touch ID with your phone upside down to get it to work. What's particularly brilliant is how you can unlock the phone in one go: just click the home button to switch on the iPhone 5S, then release and hold to unlock it in one smooth move. Perhaps more importantly, setting up Touch ID requires you to set a PIN for your phone, which is required after a reboot and to access key settings, such as adding new fingerprints. So, in adding easier-to-use security, Apple is also pushing people to be more secure in general. Then, there's the future of the technology. At the moment Touch ID can be used to unlock your phone and to buy from iTunes and the App Store, rather than having to enter your password. It makes sense that Apple will open this system up at some point in the future, at least to certain developers, so you could use your fingerprint to access your bank, for example. Nothing has been an- nounced, but we'd be surprised if Touch ID isn't used for more over the coming year. Fingerprints are stored in the phone's A7 chip's Secure Enclave, where they're not shared or uploaded to iCloud. This helps boost security and should stop the fingerprint reader being hacked. Of course, the system is not entirely fool-proof, but Apple with a 50,000-in-1 chance of someone being able to unlock the phone that's still better than the 10,000-in-1 chance of someone guessing a four-digit PIN.