Use device to track me on the way back (6)
I believe the answer is:
employ
'use' is the definition.
('employ' can be a synonym of 'use')
'device to track me on the way back' is the wordplay.
'device' becomes 'ploy' (I've seen this before**).
'to track' is a charade indicator (letters next to each other) (some letters follow or go after others).
'on the way back' says the letters should be written in reverse.
'me' reversed gives 'em'.
'ploy' put after 'em' is 'EMPLOY'.
(Other definitions for employ that I've seen before include "Draw on" , "Give paid work to" , "Use or give job to" , "Keep (someone) occupied" , "Give work to (someone)" .)