The Actiwatch Score is a wrist-mounted device which incorporates an accelerometer that detects and logs movement.  It can therefore be used to measure physical activity or the absence of it over time.

Actiwatch® Score --情绪, 饥饿, 疼痛, 疲劳研究.

Bro Three Ways to Monitor Pain 03[2010].pdf

Subjective Scoring.  The Actiwatch Score also has a display and a scoring button labelled with an S. The scoring button is pressed a number of times corresponding to the required subjective  rating.