The Firefly and Serenity Database

The subdermal tracking implant is a piece of micro-technology used for tracking individuals.[1] The device is implanted below the surface of the skin. It is networked via the Cortex with heavy encryption and internal shielding. It cannot be detected by electronic scanners and registers the individual's bio-signs to mask itself.

When activated, the implant begins transmitting a signal that can be traced and pinpointed anywhere in the 'Verse within a half mile radius.

Mika Wong fitted one of these devices on Elmira Atadema when she agreed to be his confidential informant on Hunter Covington.