homing device

An inmate sends a phone’s GPS location to the drone pilot, who uses the phone as a homing device, Parkhill said.

The other pairs a sort of homing device for cancer cells with a payload of chemotherapy that’s released when it reaches its target.

With a box of active homing devices leading the way, it was only a matter of time before they tracked down the haul.

Since the homing devices from the comics are slightly less impressive now that everyone has an iPhone, Parker is now equipped with a fancy GPS system on his wrist.

If the burglars take great pains to steal what turns out to contain a homing device that leads the police to them, that’s ironic.