The Carrier IQ document offers the most detailed explanation yet of how the tracking software works and how wireless carriers are using it. The move is the latest by Carrier IQ to rebut a report published late last month by security researcher Trevor Eckhart contending that wireless carriers could use the Carrier IQ software to conduct surreptitious and intrusive tracking of Android, BlackBerry and other smartphone users. Experts say it remains an open question as to whether that assurance is enough to quell the concern. The document offers details on how the software is deployed on mobile devices.”]