Haptic clothing to keep athletes in sync

If you've ever watched a ballgame and wished you could grab an errant player and shake him up to get him to play better, your chance is here. No, you won't get to go out onto the field and do it; the player's clothing will take care of it for you. Scientists at the Netherlands Organization for Applied Scientific Research are developing haptic clothing for athletes. The idea is that sensors in the garments can respond to movements by the athletes and react accordingly, by, for example, vibrating at the correct speed if a rower on a crew team slackens his pace (or, we assume, tightening at the throat if a fielder misses a ball).
Remote-controlled versions are also being developed, opening up a world of possibilities for sadistic coaches and —
perhaps, someday — at home fans to make sure players are paying attention.