Just how many ways are there of unlocking your phone? We’ve got passcodes, patterns, fingerprints, and now, thanks to the ZTE Grand S3 — biometric retinal scanning. We’ve seen this tech before, and ...

Let’s all give thanks for selfies. Not because they’ve given the vain something to occupy their time, but because without them, we wouldn’t be on the cusp of unlocking our phones merely by looking at ...