“The Guardian reports that researchers have found a hidden file on all iPhones, iPads and any computers to which they synchronize, logging timestamped latitude and longitude coordinates of the user since June 2010. A tool is available on their website to check on your own.”
A friend was recently telling me how designers of certain free bible software can track when and exactly where that software is being used. In other words every time you read the bible your GPS position and time of reading is logged somewhere. Interesting blips blazed across Egypt, for instance. Now imagine this software gets into the wrong hands. It would make it easy for Muslim hardliners to track down every last Christian in their land.