A person or device that follows and locates someone or something by detecting their signs or using technology.
From the verb 'track,' which comes from Old French trac meaning 'track' or 'trail,' possibly from Old Norse. The suffix '-er' indicates 'one who does the action,' making a tracker someone who follows tracks.
Modern trackers do everything from hunting animals using animal signs to tracking your phone's location—but the old skill of reading footprints and broken twigs is still used by wildlife biologists and rescue teams today.
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