GPS Features

[IDR]

This thread is to list the possible functionalities you might find in a GPS.  Please discern between software and hardware items in your list.  I'll start it off with the following:

Hardware
Barometer
Electronic Compass
Expandable Memory
Waterproof

Software
Auto-routing
Track Reverse
Tracking

 

[CrazyPorra]

 

[Franswest]

 

[IDR]