The TomTom One 3 GPS Navigator uses a Linux operating system that allows for alterations to the original software. These "cracks" or "hacks" can allow the TomTom 3 to perform a number of extra functions, from outputting information via Bluetooth, to becoming a portable MP3 player.
TomTom One 3 Background
The TomTom One 3 GPS Navigator is a portable car navigator which offers text and voice step by step directions. This was the first model to offer the MapShare feature, which allowed users to update maps interactively with road construction or new roads and share the information with other users. It was also known as the TomTom 3rd Edition in the United States and retails for between $130 and $200.http://www.amazon.com/TomTom-3rd-3-5-Inch-Portable-Navigator/dp/B000U9WVW6
Smart Navigation
The TomTom One 3 GPS device allows the user to have a portable and lightweight sized version of the regular full-size touchscreen device. It provides 3D graphics and turn-by-turn instructions that are spoken by the device. The MapShare software also allows the users to update street names and points of interest. The Smart Navigation allows the user to compute an estimated destination time of commute and a help menu that allows instant access to emergency services.http://www.tomtom.com/products/features.php?ID=397&Lid=4&Category=14