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auto tracking
auto tracking n. 
/ˈɑdoʊ ˌtrækɪŋ/ automatic tracking (in various senses of track v.1); a facility or device which does this; frequently attributive.
Brit. /ˈɔːtə(ʊ) ˌtrakɪŋ/
, /ˈɔːtə(ʊ) ˌtrakɪŋ/U.S. /ˈɔdoʊ ˌtrækɪŋ/
, /ˈɔdoʊ ˌtrækɪŋ//ˈɑdoʊ ˌtrækɪŋ/ΚΠ
1912 Los Angeles Times 31 Oct. ii. 4 (advt.) The last word in up-to-date piano player mechanisms... Come in or send for catalogs fully explaining the many features of excellence, including electric auto tracking device; silent high speed lever, [etc.].
1965 Times 16 Sept. 17/5 A £150,000 order from the Ministry of Aviation for precision auto-tracking radar equipment for the Royal Air Force.
1989 Grattan Direct Catal. Spring–Summer 878/1 Philips VHS recorder... Four event one month timer. Hand programmable. Auto tracking.
2009 Herald Sun (Melbourne) (Nexis) 4 Apr. They [sc. the laws] do not properly regulate facial recognition, night vision, motion detection, auto tracking and other emerging technology.
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