I have an Ipaq HP and I purchased a GPS module from Radio Shack for about $100. It comes with everything you need and plugs right into the bottom of your PDA.
That means that the user can connect an external antenna via a cable to the GPS unit so that the unit can be used inside a boat or car while the antenna is positioned outside with a clear view of the...
An Internal GPS is usually referred to as a navigation system already installed and internally attached to for example a phone/ car. An external GPS is a navigation system that is added later and is...
The Tom Tom GPS system is indeed very, very effective because it's one of the most popular as well as the most high quality of GPS brands. Buying it would be a smart choice to the customer.