Radio frequency identification (RFID) refers to a broadcasting machine, or tag, that is slighter than a dime. It can be implanted in a product, an animal or skin. RFID tags talk data to a reading device.

Function

1. RFID functions by permitting an incorporated circuit to collect and process data. An RFID tag has an antenna, which gets and sends signals.

Types

2. Three kinds of RFID tags are existing active, passive and battery assisted passive (BAP). Passive RFID does not contain a battery or exterior power source.

Uses

3. RFID tags are utilized in passports, transportation passes, supply tracking, animal recognition and information technology. United States has needed RFID technology in passports since 2006; the tag saves similar information that is on passport and a digital photo.

Benefits

4. Big numbers of RFID tags can be read immediately. The tags can be not reusable or robust.

Concerns

5. In 2006 RFID enemy Katherine Albrecht expresses worry over IBM's search for a copyright on a kind of RFID technology that she says could cause tracking of public. IBM says technology would maintain track of consumers' shopping habits in stores.