
Aluminum foil can help block a signal from getting to a phone. A law professor suggests instead of allowing warrantless searches of phones, police take measures to protect the phone's content while they wait for a warrant. (Photo: Shutterstock.com)

...and they BRAGGED about it via Twitter:
Hey, @RepFredUpton - these folks at the hearing have your hat for you when you are done. #ActOnClimate #Denierpalooza pic.twitter.com/9s0k7b0Hat
— Sierra Club Live (@SierraClubLive) September 18, 2013
The Sierra Club activists were on Capitol Hill to attend a hearing of the House Energy & Commerce Committee -- “The Obama Administration’s Climate Change Policies and Activities” -- chaired by Michigan Rep. Fred Upton, a Republican.