It is a smart button. It has been mentioned in several Almond 3 related articles and it appears to be pretty useful and should be relatively inexpensive. I believe it will be similar in results to the Amazon Dash button people use, push it to activate something. I think one article I read said it would be able to use multiple activations, push once for x, double push for y. Also, reportedly in the 3 for $30 range.