Interactive mirrors are starting to get lift off and one of their most important uses would be in the medical arena. People are still playing with ideas, patents and the technology behind interactive mirrors but they will happen. Some of them function like a smart board, some are using two ways mirrors and some are using smoke and mirrors to create the effect. The motivation and research are there to develop them into functional and fun items. Just a matter of time. The one featured in the video has a patent pending but it was developed in 2008 so maybe it does have a patent by now. There are instructions here to develop a magic mirror with the Raspberry Pi and Mad Science has instructions for making a magic mirror using your smartphone.