Limited edition silver and gold coins with QR codes as http://www.q5g.nl that were unveiled by Royal Dutch Mint to celebrate 100th anniversary of the mint in Utrecht. The 5 Euro silver coins and 10 Euro gold coin will be released on June 22nd, 2011.
No futher explanation about the function of the QR codes, is it for fraud prevention? Archeologists in the future centuries will definitely question the use of QR codes on the silver and gold coins, after all, what seems advanced and modern in our time would become something ancient in the future.
[ Source: The Rich Times ]