The earrings' Kickstarter page claims they have the potential to be more accurate than fitness bands, since they don't move around and lay flush against your skin. But before you can see for yourself if that's true, Ear-o-Smart's developers have to raise $26,500, so they can work on improving its battery life. A minimum pledge of $110 will get you a pair of the simple white earrings you see above, while $133 will get you a kit that lets you create your own design. BioSensive Technologies, the Canadian startup behind the project, hopes to come up with the first batch of hardware by February and to start shipping to backers by June 2015.