Submission + - World's tiniest RFID tag unveiled - 50um
Agent Provocateur writes: "BBC has photo's of the smallest RFID's to date at 50um and that is about the width of a hair. The world's smallest radio frequency identification tags have been unveiled by Japanese electronics firm Hitachi.
The minute devices measure just 50umm by 50um and to the naked eye look like spots of powder.
They are thin enough to be embedded in a sheet of paper, Hitachi spokesman Masayuki Takeuchi says.
RFID tags store data about the objects they are attached to, and companies are vying to create increasingly tiny versions.
Recently, Hitachi unveiled another RFID tag, the Mu-chip, which measures 0.4mm by 0.4mm.
But the latest chips, which are yet to be named, can hold the same amount of data as the Mu even though they are much smaller.
They have one major issue, however — they need an external antenna to work, and the smallest antenna developed so far is about 80 times bigger than the tags.
Hitachi says it wants to study the tags' possible uses, but it does not yet have any plans to put its latest creation into commercial production. The full link is here"
