RFID

Radio frequency identification is the next wave in the evolution of computing. The concept is simple, place a transponder (a microchip with an antenna) on an item and then use a reader (a device with one or more antennas) to read data off of the microchip using radio waves. The reader passes the information to a computer.

Tags consist of a wireless chip and antenna that are housed in a label or other protective casing and attached to the item that is to be identified. The tag may be active, which means it has a battery to power its own transmission, or passive, which transmits using power received from the reader in the form of electromagnetic waves. Active tags have longer read ranges making them appropriate for asset management and real-time location systems (RTLS). Passive tags have a shorter read range and are smaller and are less expensive than active tags making them the tag of choice for most supply chain applications.

Radio Frequency Identification (RFID) Tracking System can be used for many common warehouse and inventory management operations, including receiving, putaway, picking and shipping procedures. RFID has a high return on investment potential when applications take advantage of its reading characteristic to overcome previous limitations or to enable new business processes.

With an RFID device, items can be monitored and identified at process points where other forms of data collection are impractical because of environmental or cost limitations. Factor in the ability to encode unique, secure serial numbers on tags, and it begins to become clear how RFID can lead to new operational levels of visibility in inventory and supply chain operations for warehouse and distribution. Reduced inventory levels, storage, handling and logistics expenses follow from improved visibility.