Released earlier this spring, the new generation of Jawbone UP products (2, 3 and 4, the latter which includes contactless AmEx payments on top of heart rate and temperature tracking) offered a favorable initial impression, but after a few weeks, we retired the UP3 from our arm line-up due to some unacceptable usability issues. A double-tap gesture was required to switch between activity and sleep …
Jawbone UP Gets Back on Track
