There are plenty of uses for a chip in your hand - and it can still be used when "locked" as you'll often just be reading the fixed ID on it. I use mine to log

There are plenty of uses for a chip in your hand - and it can still be used when "locked" as you'll often just be reading the fixed ID on it. I use mine to log into my PC using a custom NFC reader that emulates a keyboard to type my password. https://0xfred.wordpress.com/2016/03/04/nfc-login-2-1/ https://0xfred.wordpress.com/2016/03/04/nfc-login-2-1/ Another (still in the works) is unlocking my van after I've been out kitesurfing. Modern keys don't like being taken out in the water. This one is waterproof and not easy to lose. If you're thinking of typing anything about "the mark of the beast" or somebody chopping my hand off to gain access, please don't bother.