Japanese Ad Supported Vending Machines?

Delight vending machine
Cool, in Japan you may be able to get a yummy drink not for hard earned Yen but for a slice of time. A company has plans to introduce vending machines that will offer free drinks is you agree to watch a 30 second commercial. I have no idea how the machines will verify if you are watching, face sensing algorithm I suppose. Maybe it will void the offer if your eyes lose track. I might work. If so this will become a target of clever people looking to get some free drinks.

[via lonelocust]
Coming Soon in Japan: Free drink vending machines!!