Fitbit quickly issued a voluntary recall for its Force sportsbands, even though it has yet to pinpoint the exact component that can trigger contact dermatitis. We may soon find out, though, since the firm is working with the Consumer Products Safety Commission to shed more light on the situation. To be fair, Fitbits execs havent been sitting on their hands — theyve been running tests and have results showing no problem with the devices battery or electrical system.