Hitachi has developed a new version of its RFID µ-Chip, this time with an antenna embedded into it.
When using Hitachi’s original µ-Chip, one of the world’s smallest RFID ICs measuring only 0.4mm X 0.4mm, an external antenna had to be attached to allow external devices to read the 128-bit ID number stored in its ROM (Read-Only-Memory).
Because the new version features an internal antenna, however, the devices can work in a stand-alone fashion. The development means that µ-chips can be used a number of new applications – embedded in bank notes, gift certificates, documents and whole paper media.
Because the antenna is formed using bump-metalisation technology – a process already widely used by semiconductor manufacturer – the use of any specialised manufacturing equipment is unnecessary.
The chip data is recorded in read-only memory during the semiconductor production process, and therefore cannot be rewritten, thus guaranteeing its authenticity.