Al Franken has demanded answers from Carrier IQ, which has reportedly been logging and transmitting sensitive information from consumers' phones without their knowledge or consent.
The alleged data retrieval by the phone-tracking firm includes Android devices, Blackberry phones, HTC phones, and even iPhones, reports the International Business Times.
Senator Franken took action in a formal letter addressed to Carrier IQ CEO Larry Lenhart, demanding answers by Dec. 14.
"It appears that this software runs automatically every time you turn your phone on," Sen. Franken wrote.
"It also appears that an average user would have no way to know that this software is running - and that when that user finds out, he or she will have no reasonable means to remove or stop it,” he stated, reports the IBT.
The Carrier IQ software is installed by the handset manufacturers and carriers, leaving the user unable to opt out.
On the iPhone, Carrier IQ only works in diagnostic mode, which is off by default, and only logs technical data.
Yet, on almost every major phone, a software company is logging every keystroke made by the user.
Carrier IQ said in a statement on their website that they are only "counting and summarizing performance, not recording keystrokes or providing tracking tools,” the IBT reports.
