An RFID wallet blocks electromagnetic signals, preventing skimmers from reading data on credit cards, IDs, and passports with ...

If you're looking for a way to get past that daily tool booth faster, you may have looked into an RFID toll tag. Here's how they work, and when they might not.

I will explain the basic concept of anti-collision here, and then point you to some information that goes into more depth. Readers can not talk to two tags simultaneously. Rather, they must isolate a ...