Japanese Vending Maching Uses Biometric Technology to Charge You

That’s right, a new vending machine uses vein-reading technology to charge you for products, rather than the traditional coin slot or credit card reader. One caveat: “the system exploits your identity a bit in the process, using age and gender information on file to display an appropriate video ad while you enjoy your refreshment.”

I would like to try on this machine.. is sound so interesting...

This is how the machine look like..