New Process Allows Inkjet Printers to Produce Rainbow Security Holograms

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.