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The RFID chip is used in some areas as an alternative to using the standard bar coding system. The RFID chip can be made extremely small – a microchip – using nanotechnology. One of the smallest RFID chip was designed by Hitachi.
Called the µ-chip, the Hitachi RFID chip was developed using 2.45 GHZ frequency. It comes with a standard 128 bit memory for storing data, but it has no write read capability. The chip comes with unique ID numbers that can help you locate and uniquely identify objects to the number of a trillion, with total absence of duplicates in a gigantic lot. The size of the chip is so small, less than .4mmx.4mm, that it can be embedded in objects small and large, without detection. For example, it can be embedded in paper, in a straight line made of an external antenna, which can provide longer outreach for the chip’s signal capacity and completely avoid ordinary detection.
There is also a database that stores information about the events tracked by the chip. This database can be accessed through a special network. This access can be used to develop tracking systems on top of the chip hardware. For example, a retail network can track product movements, especially for small product items like envelopes or books, in which a chip like this can be innocuously embedded and tracked.
The development of RFID chips as small as this shows just how advanced modern day micro engineering technology has become. Miniature chips help them become useful for performing a variety of tasks that were not thought possible before; they can be implanted anywhere and everywhere, and data from them can be used for marketing purposes as well as for lifestyle altering technology developments. Using such small chips, researchers can study every aspect of the habit and lifestyle of a subject, using the information gained to provide better facilities to a class of consumers.