RF Identification

RF Identification and Proximity Readers

RF Identification (RF/ID) uses radio frequency technology for tracking and identifying vehicles, animals, pallets, etc. By affixing electronic tags to objects and encoding specific information, an object can readily be identified and tracked from a distance. RF/ID can have proximity ranges of up to a 100 feet with minimal interference. RF/ID provides both proximity and dynamic identification so that tagged objects do not need to be physically contacted or stationary in order to be identified. RF/ID systems are extremely accurate, have no line-of-sight requirements, and cannot be erased easily from environmental conditions or strong magnetic fields.

RF tags are either active or passive. Active tags are usually more expensive because they can transmit a low-powered signal. These tags come with batteries and permit farther distances for RF identification. Passive tags do not come with batteries and are detected solely by the RF receiver.

The most common use of RF/ID is with toll tags. Other applications include personnel monitoring, security access, and package sorting.