Until recently, only larger birds could be followed using tracking devices, because the gadgets were too big and heavy to attach to small birds.
Students are then required to use the tracking device to check in five times throughout their day, including at 8 p. m. , well after school is through.
The novel facing sun automatic tracking device has the advantages of simplicity and reliability, high automation and long operating life.
Before, he had put a tracking device in it, which is how they found him.
Jack brings up the possibility of her planting a tracking device on Alexis, but Elizabeth is uneasy about ever seeing the man again.
In 1987 when Discovery Channel's now-famous Shark Week series debuted, researchers had few means of studying the animals beyond underwater cages and crude acoustic tracking devices.
With the help of a guiding laser, it shoots a satellite-based tracking device, smothered in epoxy goo, onto the target vehicle, allowing the police to track the suspect without endangering the public.
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