Check it out, from the OC Register: Disney's mouse ears become interactive | hats, disney, davis - Business - The Orange County Register
Yes, I am the one quoted in the article. I've had fun playing with the ears, and doing a little reverse engineering on what they can do, how the broadcasts from ear-to-ear work, and overall geeking out with them. I've learned way more that I wanted to about infrared, including timing pulses, preambles, and Pronto codes."I saw these ears and thought this was something absolutely fun to reverse engineer," said Zylstra, who has a background in technology and works for Disney fan site Micechat.
Because the hats were given away free at the special event Zylstra didn't have a problem tearing them apart and looking inside. He found a Texas Instruments chip inside and each ear had an LED light while the right ear contained an infrared receiver and the left a transmitter. That transmitter means the hat is not only capable of receiving signals from the park but it can talk back too. And the hats can talk to each other as well. The proof? Zylstra and a friend were playing with the hats and noticed that when you put two close to each other they would sync and display the same colors.
Disney senior technical director Chuck Davis says they've just scratched the surface of what can be done with the technology.
If you happen to be a celebrating a birthday, the hats could behave a certain way, Davis said. Even more, if you happen to pass by another person celebrating a birthday, the hats could react and provide a special experience. Or a group with the hats can have them all behave a certain way unique to their group.