Ben Lovejoy is a British technology writer and EU Editor for 9to5Mac. He’s known for his op-eds and diary pieces, exploring his experience of Apple products over time, for a more rounded review. He also writes fiction, with two technothriller novels, a couple of SF shorts and a rom-com!
As much as I love anyone no way would I add a fingerprint
Why not? it gives you access to their phone. The person asking you that, is saying he trusts you enough to give you access into their privacy data.
Later on, you could access Amazon on his Phone and pickup and buy your favorite engagement ring (it will be charged to his account of course). And now, everyone is happy! :D