"Matthew S. Hamrick" writes: > But I like the idea of a switch for the microphone and a cover for the > camera, too.
Having the security mechanism easily inspectable and verifiable is also nice. There is nothing like a spring-loaded double-pole knife switch mounted on a glass sheet to give you a warm fuzzy that the two wires coming from the phone are really disconnected when the user stops pressing on the switch. In a similar vein, and a bit more automatic would be a hardware system that forced a red led to be lit whenever the microphone was active. Something as simple as a reverse biased diode in the microphone's audio path could keep it disconnected until the audio line were forced to some voltage that caused the diode to be forward biased and a led to light. One could periodically check that the output from microphone's A/D was indeed zero when the microphone is supposed to be off. The latter is still subject to somehow verifying that the microphone checking code hasn't been compromised, but the jtag interface and doing a byte-by-byte comparison of the actual kernel to the expected kernel should be of help there. >From what I understand, certain government organizations are very aware of the dangers that open microphones on cell phones pose. Wouldn't it be great if an open-source project solved a problem that the big established players are effectively barred from solving due to agreements with competing government organizations? -wolfgang -- Wolfgang S. Rupprecht http://www.wsrcc.com/wolfgang/ _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
