> Filter the signal down to about 0.5Hz, which is comparable to how fast most displays auto-adjust for brightness. No, that wouldn't help. From the article: F

> Filter the signal down to about 0.5Hz, which is comparable to how fast most displays auto-adjust for brightness. No, that wouldn't help. From the article: For the light sensor, limiting the frequency will not thwart our attacks; even frequency as low as 1Hz would allow the same type of attack, with only factor-of-two slowdown.