We have come a long way from Gloggers Quantimetric Self-Sensing apparatus from 1996.
In her excellent and comprehensive article Anne Helen Petersen describes the advancements of self-tracking applications and services. As she notes, “We’re fatigued — with the sheer amount of decisions that structure the 21st-century life”. That could be one of the main drivers behind the increasing use various self-tracking applications and services.
Quantimetric Self-Sensing apparatus (body sensing apparatus with Digital Eye Glass for display of body sensing apparatus output, etc.).
By Glogger (Own work), CC BY-SA 3.0, via Wikimedia Commons.