GPS Tracklog linked me to this article, which I thought was interesting and relevant to this site. Interestingly, science fiction writer Arthur C. Clarke predicted the use of satellites as repeaters of radio signals.
In August of 1956, he expanded on the idea, predicting both satellite TV and GPS. Wicked, huh?
Now here’s an interesting gadget that addresses some issues I’ve had with using an iPod Touch or an iPhone in the field as a GPS. GPS apps have been available since the beginning, I think. At first, the iPhone calculated location based on cell tower triangulation. It wasn’t long before Apple put a GPS chip into the iPhone and that has only resulted in an increase in the number of people who use their smartphones as a GPS in the boonies. Android phones and others have GPS chips in them, also. Read more... (957 words, 2 images, estimated 3:50 mins reading time)