Abstract: A tracking device has a buckle body with an interlocking portion that enables the buckle body to be removably jointed with a mating body. The buckle body further includes an internal chamber and a planar tag receiving area surrounded by a frame, which receives an identification tag. Electronics are to be positioned within the internal chamber, the electronics comprising a printed circuit board mounted on and operably connected with a battery. The internal chamber is shaped to accommodate the electronics so that they fit securely and snugly, with minimal movement therebetween. The printed circuit board includes a computer processor, a computer memory, an accelerometer, and a transceiver for communicating with the computer network.