4 ms·
webcam <-> screen: QR codes? accelerometer: is very low bandwidth (think ~10-1000 measurements per second). The noise is ~100μg/√Hz - with 12 bits samples I'm
by jmpe 13y ago
webcam <-> screen: QR codes?
accelerometer: is very low bandwidth (think ~10-1000 measurements per second). The noise is ~100μg/√Hz - with 12 bits samples I'm not sure you'll pick up HDD vibrations (but rather easy to test).
Someone should lend the people researching this an oscilloscope.
- mrtksn 13y agoNo, not QR codes since it would require the webcam capturing the screen directly. The screen may be used as a light source for the transmission and the webcam can capture the light reflecting from the walls...