History
A tracking bracelet is a wrist-bound device manufactured by S.H.I.E.L.D. that is used to track the activities of an individual and, in some cases, limit access to electronic devices.[1]
Miles Lydon and Skye were both compelled to wear tracking bracelets after the unsuccessful attempt to neutralize Chan Ho Yin in Hong Kong.[1]
Skye's bracelet was eventually removed after she uncovered information that led to the successful rescue of Agent Phil Coulson. The status of Lydon's bracelet has not been updated.[citation needed]
The bracelets at least can be set to unfasten at a command phrase - although whether that includes voice-recognition capabilities is not as yet clear.[citation needed]