tracker


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tracker

[′trak·ər]
(computer science)
An input device used in a virtual environment, which is capable of reporting its location in space and its orientation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Bluetooth tracker

A small device that is attached to items such as a phone, tablet, keyring or wallet for tracking purposes. A mobile app communicates with the tracker via Bluetooth, and the tracker can be signaled to sound a beep when the item cannot be found. The app also records the location of the tracker the last time it was in range.

Even When Out of Range
When the tracker is out of Bluetooth range, the assistance of all other users with that same tracker app is enlisted behind the scenes. All running apps pick up the signals from the trackers of all the users of the same product in the vicinity. The signals sent to the vendor's cloud are used to pinpoint their geographic locations. See vehicle tracking.


Popular Trackers
The Tile (left) and TrackR Bravo (right) are examples of Bluetooth trackers that are small enough to place almost anywhere.

tracking

(1) See Bluetooth tracker, vehicle tracking and child tracking.

(2) The recording of an event. See tracking cookie and email tracker.

(3) Synchronizing a reading or writing mechanism with a rotating platter. For example, a stylus must maintain a smooth contact with the groove in a vinyl phonograph record. A laser must align itself precisely to the tracks of a CD.

(4) In desktop publishing, the consistent letterspacing of text. Tracking is used to expand or contract the amount of text on a page by expanding or reducing the amount of space between letters. It differs from kerning in that it is applied to an entire font or to a range of text, whereas kerning refers to certain letter pairs.
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References in periodicals archive ?
A laser tracker is a portable coordinate measuring machine that allows users to achieve their accuracy goals quickly and easily and can replace traditional tools such as piano wire, plumb bobs, layout machines, theodolites, optical transits, and total stations.
I am happy every one of us recognizes this fact, hence the importance of this gathering to build our knowledge base of the National Seed Tracker.
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As with all App-Garden solutions, the Facility Tracker meets your needs by giving your district control and organization over maintaining the facilities, grounds, classrooms, and more.
The tracker enables dynamic referencing, automatic alignment and continuous monitoring of part parameters, which for ACO means their inspectors can do their job in less-than-ideal environments such as the track or shop floors without having the measurements compromised.
The tracker has been installed in all trains that go to Karachi, Peshawar, Rawalpindi, Faisalabad, Multan, Sargodha and Kasur.
Bass Pro & Tracker Boat Center, East Peoria, Illinois
KARACHI -- The Sindh Transport Department has decided to have trackers installed all new and old motorcycles across the province, a summary of which was also forwarded to the chief minister on Wednesday.
The NORAD Santa tracker is almost ready to launch, where families can check the website or app to see where Santa's sleigh is on Christmas Eve.