It can be put in your wallet, purse or around your neck and is very convenient, but it sure knows
a lot about you at some companies:
If your employer has given you a card key to get into your office, you should know: it can be used to track your movements -- even when you don't know it. But the makers of this wallet say if you put your card key inside it can't be read.
David Mopather gets around his work place by using a card key. He never thought about how his company or someone else could keep track of his movements by tracking his card.
READ THE REST
