"I'd say the biggest worry is the growing use of wireless video cameras in traffic," which could be used to trace where a person has been, Redelfs said.

Much of the capability for such remote wireless monitoring has been available for several years, but now that wireless networks are faster and more widespread, the number of wireless monitoring applications has mushroomed, say analysts and attendees at Go Mobile.

Verizon Wireless and AT&T Mobility representatives gave separate keynote addresses at the show to underscore the trend, noting that they plan to be connecting with a wide range of wireless devices in coming months.

AT&T has mostly emphasized wireless connectivity for consumer electronics products, while Verizon seems to have a wider scope that includes machine-to-machine communications via wireless, and more.

Maurice Thompson, director of business development for Verizon's open development efforts, said the carrier is working on supporting any application over any operating system on wireless.