![five-dollar-bill-zoom](http://uploads.neatorama.com/wp-content/uploads/2011/02/five-dollar-bill-zoom1-500x359.jpg)
These itty-bitty low power organic transistors can be placed on the surface of bank notes for security or tracking by transmitting information wirelessly to a scanner. A group of German and Japanese scientists manufacture these 250-nanometer-thick transistors using minute amounts of aluminum and gold and a special dry process. They work well on the rough surface of paper and need only three volts to operate.
![](http://l.yimg.com/a/i/ww/news/2011/02/25/taxpencil.jpg)
These mistakes could wind up costing you money or attracting unwanted attention from the IRS.
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