!!! Be careful a similar version of this is patent pending. I know the guy that came up with this 3 years ago when he showed us a demo. http://www.eletronic-badge.com
I'm not sure if it's the exact same process though.
I'm not sure if it's the exact same process though.
Following the advice of Linus Torvalds [1] and other wise, experienced technical leaders, I suggest all working engineers avoid idly reviewing patents or patent claims unless and until a patent expert representing your own interests advises that there is a credible threat of legal action and need to understand specific patents.
Otherwise you're helping trolls and wasting time getting worked up over what is, 99.99% of the time, nothing.