What's the smallest GPS device on the market?

Question

Something I could attach to an object in order to track it's whereabouts...

Answer 1

Sarantel Powers World’s Smallest Tracking Device

Sarantel, the leading manufacturer of revolutionary filtering antennas for mobile and wireless devices and mywerk GmbH, a manufacturer of GPS tracking devices, today announce the availability of the world’s smallest quad band GPS and GPRS tracking device.

Just larger than a matchbox, the Nanotrack is the world’s smallest GPS tracker and has been designed to serve the personal, car and asset tracking markets. The device receives positional information from the GPS satellites and communicates this data via GSM networks. A central server stores the position and information for the user who can use it in GPRS or SMS mode.