A group of U.S. lawmakers has introduced legislation that would require law enforcement agencies to get court-ordered search warrants before obtaining a suspect's mobile phone location or GPS data, instead of using prosecution-issued subpoenas.

The U.S. Congress needs to pass legislation that would require law enforcement agencies to get permission from a judge before tracking suspects through their mobile phones, instead of the now-common practice of tracking a mobile subscriber's location after a prosecutor-issued subpoena, two U.S. lawmakers said Tuesday.

The main U.S. law targeting cybercrime may need to be changed because it has allowed law enforcement agencies to target people who simply violate websites' terms of service or their employers' computer use policies, two senators said Wednesday.