[CRidge]

Amazing, Revolutionary, Useless... and let's not forget buggy! And with horrible support... My device was not able to recalibrate, a problem shared with many others should I believe the forum. A week or two has passed, and no reply from the makers of the device, neither on the forum or on my bug report.

I guess I just got another hunk of junk to put in the failed-devices-closet... :-(

[alternize]

same here. my device reports "bright light detected" even when there's not enough ambient light to see the keys on my keyboard. turning off the monitor seems to help, but...

[vanderZwan]

It works by detecting infrared light - the lightsource is likely an infrared one that you can't see, possibly your monitor.