MyDrive Connect is compatible with 32bit and 64bit versions of Windows XP/Vista/7/8/8.1/10 preview and with most Mac OS X versions. The internal flash memory or the memory card content of the device cannot be accessed through USB for security reasons (modified applications would easily accept a map that wasn't sold by TomTom). The device can update itself by getting files through the HTTP protocol over USB. The support app is nothing more than a proxy on the PC buffering the download. So far the security achieved using this mechanism has not been broken yet. Also, the usage of the non-FAT/FAT32 file system brought stability improvements in device operations. Traffic services A traffic monitoring service that uses multiple sources to provide traffic information. The service does this by combining data from: traditional sources: governmental/third-party data such as induction loops in the roads, cameras and traffic surveillance new sources: traffic flow of millions of anonymous mobile phone users The information is merged by TomTom and algorithms are used to improve the data and filter out anomalous readings. The system sends updates to all TomTom Traffic users every two minutes (and the data the users receive is never older than 30 seconds). Users can receive the service through the built-in SIM, via a smartphone connection or on older devices via a standard phone connection. Re-routing can be set to be transparent to the user with the only sign that the route has been changed due to a traffic jam being a sound indication from the device and a changed . The system was first launched in the Netherlands in 2007 and expanded to the United Kingdom, France, Germany and Switzerland in 2008. By mid-2011, TomTom Live services including TomTom Traffic were available in the United States, South Africa, New Zealand and seventeen European countries: Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Spain, Sweden, Switzerland and the United Kingdom. , the service is vastly expanded and current coverage is available on the TomTom Traffic site (34 countries and the list expands every few months to new regions). HD Traffic 6.0 (August 2012): More accurate location of traffic jams, improved coverage of automatically detected road closures TomTom Traffic 7.0 (September 2013): Increased accuracy of jam location now allows for 'Jam Ahead Warnings', warning drivers when approaching a jam-tail too fast. Improved coverage of automatic road closure detection started to