Systems, apparatuses and methods for deterring product theft and preventing the fraudulent return or exchange of products. Products are associated with a Radio-Frequency Identification (RFID) tag. Tag readers located at store access points can detect the presence of the RFID tag and can be used to help...http://www.google.ca/patents/US7920063?utm_source=gb-gplus-sharePatent US7920063 - RFID theft prevention system