U.S. Representative Jackie Speier  (D-CA) introduced “Do Not Track Me” legislation in Congress today that would let people block the tracking of their online activity.

U.S. representatives Ed Markey (D-Mass) and Joe Barton (R-Texas) sent a letter today to 15 companies identified in a recent Wall Street Journal investigation as installing consumer-tracking technologies to target users visiting these sites.

The growth in the use of mobile technology has made U.S. consumers more comfortable with safeguards as fewer are voicing concern about privacy and security on their wireless devices, according to a new global survey by KPMG.

KPMG found that 48 percent of the U.S. consumers surveyed on the use of technology (e.g. computers, smart phones, mobile applications and the internet) were very concerned about privacy when using a mobile device, which was down from 58 percent when KPMG conducted a similar survey in 2008.