GPS Dog Collar: An excellent solution to the problem of a lost dog. Take a look around the site for greater detail.
Specifications:
2000+ feet of distance tracking
Low power consumption
Lower overall cost than that of similar consumer-grade items
Features:
2780 feet of distance tracking*
Update every .1 milliseconds*
USB Power: Innate Flexibility
Designed for dog's comfort
Under $60 component cost
*Functionality is limited by component robustness