For most protesters, activists, and journalists, your smartphone is an essential tool you depend on for organizing with your peers, accessing and distributing information, and helping others. It also represents a great risk, as a tool that is easily appropriated by authorities for targeted and mass surveillance. The perennial question when it comes to protests is whether you should bring your phone at all. If you leave your phone at home, that is probably the safest your data will get, and you w...