Paul

UK

RFID System Sales

In response to mini1400's comments.
The shirt is marked as SOLD in the database because it has a unique number,(4.2Billion x 4.2Billion = 17.64 x 10^18 thats 17,640,000,000,000,000,000 combinations). If the shop system sees that item ever again it ignores it because it knows it is sold, and NO other RFID tag in the world has got that same number.
The same applies to Lyndas comments, how does a criminal know what a random 64bit number relates to in terms of goods unless they have also stolen the stores database file, lets get some perspective here.