Two of the general criticisms of GPS are that the technology doesn't do very well in dense urban areas, and it doesn't get accurate enough for some uses. At least two separate organizations—the ...

We're already familiar with GPS and pseudo-GPS triangulation technologies, that use cellphone towers or known WiFi base stations to figure out roughly where you are, but InvisiTrack reckon they can ...

Editor's note: The following is Planet Analog's first in a series of Design Challenges. This one was sent to me by a reader/design team interested in using GPS in a particular application. We are ...