Advertising and technology industry advocates on Wednesday spoke out against legislation Sen. Al Franken, D-Minn., offered to stop the surreptitious collection of location data from smartphones and other electronic devices, telling lawmakers that businesses working with the information can regulate themselves.

Testifying at a Senate hearing on the Location Privacy Protection Act, Lou Mastria, executive director of the Digital Advertising Association, and Robert Atkinson, president of the Information Technology and Innovation Foundation, said the bill would hurt efforts by businesses to collect and use customer data in new ways.