olemus
kohajälituse ja/või trajektoorikooste komponent või süsteem
= a location tracking and/or trajectory identification component or system

näiteid
https://en.wikipedia.org/wiki/Tracker_(file_manager)
GPS
https://en.wikipedia.org/wiki/Vehicle_tracking_system
https://en.wikipedia.org/wiki/Radar_tracker
https://en.wikipedia.org/wiki/Activity_tracker
https://en.wikipedia.org/wiki/Solar_tracker

vt ka
- sisumonitor
- träkker