Credit card and banknote-style security holograms are an effective form of anti-counterfeiting technology, as they're very difficult to replicate. Every time a new batch is made, however, a "master hologram" has to be created first, to act as a template. These masters can take days to produce, using complex, expensive equipment. That could be about to change, however, as scientists at Russia's ITMO University have developed a quick-and-easy hologram production method that utilizes a regular inkjet printer.
Although barcodes are currently utilized mainly to keep track of
merchandise, they may soon also be used to detect counterfeit goods.
We're not talking about ordinary barcode labels, however. Instead,
British scientists at Sofmat Ltd and the University of Bradford have
devised a new 3D barcode that's actually molded into plastic or
Researchers from Vanderbilt University in Nashville, Tennessee have created the world's smallest continuous spirals. Made from gold, the spirals exhibit a set of very specific optical properties that would be difficult to fake, making them ideal for use in identity cards or other items where authenticity is paramount.