1.   A criminal who passively collects data from the airwaves would leave no electronic footprints.

2.   How we leave electronic footprints during everyday activities.

3.   If you visited either site you would have left a trail of electronic footprints.

4.   Last month, NCR rolled out SmartEC, a new software product that allows Internet service providers to better track and analyze electronic footprints of Web users.

5.   Next, you need to know you leave electronic footprints when you travel in cyberspace.