It looks more like a watch than anything else, and indeed it is, but it also has more sensors than any other tracker out there.
A tracker with an altimeter will give you a far more accurate picture of calories-burned.
But as a tracker of election optics, InTrade can be a reliable quantifier of the rise and fall of political fortunes.
late 15c., "footprint, mark left by anything," from Old French trac "track of horses, trace" (mid-15c.), possibly from a Germanic source (cf. Middle Low German treck, Dutch trek "drawing, pulling;" see trek). Meaning "lines of rails for drawing trains" is from 1805. Meaning "branch of athletics involving a running track" is recorded from 1905. Meaning "single recorded item" is from 1904, originally in reference to phonograph records. Meaning "mark on skin from repeated drug injection" is first attested 1964.
Track record (1955) is a figurative use from racing, "performance history" of an individual car, runner, horse, etc.(1907, but the phrase was more common in sense "fastest speed recorded at a particular track"). To make tracks "move quickly" is American English colloquial first recorded 1835; to cover (one's) tracks in the figurative sense first attested 1898; to keep track of something is attested from 1883. American English wrong side of the tracks "bad part of town" is by 1901. Track lighting attested from 1970.
"to follow or trace the footsteps of," 1560s, from track (n.). Related: Tracked; tracking.
Male lover of an older woman or man (1981+)