[Simone] was trying to reverse-engineer the Bluetooth protocol of his Nike+ Fuelband and made some surprising discoveries. [Simone] found that the authentication system of the Fuelband can be ...

Nike and Fitbit both have the same number of wearable activity-tracking products. The most popular are the Fitbit One and the Nike FuelBand, which are the two products this review focuses on.

For the past two weeks I've been testing out two wearable fitness-tracking devices, the Nike FuelBand SE, and the Fitbit Force. Nike 's FuelBand SE is a follow up to last year's FuelBand.