I think smash aims to be that sort of wearable. From the kickstarter page: We’re planning to open up an API to developers. There’s going to be a truckload of d

I think smash aims to be that sort of wearable. From the kickstarter page: We’re planning to open up an API to developers. There’s going to be a truckload of data, and whilst we have our own visions of where Smash can go, we wouldn’t want to restrict others from creating greatness. We're keen to move Smash into more sports and create more insightful features for players.