How about an iPhone case that can inform you when your phone is transmitting data when it is not supposed to? Like the sound of it? Edward Snowden the NSA snitch is thinking about the same thing.
It’s a fact that your phone can transmit data even when it is turned off. This glitch can be used against the user for instance to track your location. Snowden is teaming up with Andrew Huang aka Bunnie the hardware hacker to develop an iPhone case that will notify the user when the data is transferred without their knowledge.
The idea is to guard correspondents, rights workers from being stalked by governments and to uncover their agencies’ struggles to spy on such people. The set of two has published a paper with the description of the design even though the product is still in concept stage. The phones antenna is to be accessed through the SIM slot with probe wires to track the transmitting signals. The outside display will show the status of the signals.
The paper quoted the case of a Syria reporter who was tricked and killed for covering the civilian casualties. Though this might be a little over the head for the general public but for the correspondents it might be a boon in disguise.