Skinny mini Demi Moore was just spotted sporting a Jawbone Up! — a revolutionary (not out yet!) armband that tracks its wearer’s eat, sleep and activity patterns. Paired with a free smartphone app, the high tech wristband makes suggestions for healthier living. Sign up to receive updates on the Jawbone here, and in the meantime, here are our 10 favorite weight-loss gadgets that are already on the market.
Shop our guides to the best stacked high heels, best leather satchels, and spring fashions.