Here’s a really cool device, a DIY secret GPS box that opens only when the subject holding the device is at the target GPS location. This might be a great way to keep secrets.
Like any other GeoCache it is a box that is linked to a certain coordinate on earth. The challenge is to find this coordinate, in order to access the contents of the box.
Here’s a cool GPS serial hack using a Compact GPS from older PDAs.
Below is a description of how to modify the compactGPS to work with a standard serial port. This mod will allow you to use the device using your PDA serial port, a PC serial port, and a PDA/GPS car kit.
This device is a compact flash adapter for GPS If you are a walker or hiker, you should look at this device. It is very accurate, and has a very low data acquisition time. This worked fantastical
