The technology has come out of the Samsung R&D labs; during development it was known as Personal Inductive Showcase System - Transfer Across Keratin Epidermis.
The main downside to the system is that you need to eat more calories to boost your electron levels. Samsung suggest eating an extra Weetabix at breakfast time will give an extra 10 minutes of talk time. However, if you really need a charging boost, you would be well advised to have a bowl of Frosties, in addition to your usual toast and marmalade.
We're not sure whether this charging system will be available in retail units; it is not unusual for there to be hardware and software changes between prototype and final hardware.