George Orwell warned about Big Brother, but some who glide through Bay Area toll booths to the "beepbeep" of FasTrak risk an even more haunting specter: Big Angry Soon-to-be-Ex Spouse.

As the number of cash-free bridge commuters rises, so do the ranks of divorce lawyers and other civil attorneys who have subpoenaed, and received, personal driving records from the agency that oversees the regional e-toll system.

"You just kind of wonder if people would as happily use this system if there was a big red thing on the transponder saying, 'All data collected by this device could be used in any court for anything,' " said Lauren Weinstein.