The RFID, wireless semiconductor integrated circuit that stores an ID number in its memory, was proposed about a decade ago as an alternative to the barcode. Its use, however, has so far been limited to a few applications where its advantages offset its relatively high cost.

 

The µ-chip is Hitachi's response to resolving some of the issues associated with conventional RFID technology. The µ-chip uses the frequency of 2.45GHz. It has a 128-bit ROM for storing the ID with no write-read and no anti-collision capabilities. Its unique ID numbers can be used to individually identify trillions of trillions of objects with no duplication. Moreover with a size of 0.4mm square, the µ-chip is small enough to be attached to a variety of minute objects including embedding in paper.

 

 

Manufacturing, distribution and tracking systems can be built or enhanced using the µ-chip with an event-driven accumulation of, and on-demand access to, information stored in a database through the network. By coupling this database with the versatility of the µ-chip new business and life styles applications can now be brought to reality. These new applications allow manufacturing, commerce and recycling processes to be operated in a way that has not been possible before.