No the lights are not bright. They utilize infrared light sources and have CMOS detectors sensitive to that spectrum. In laymen's terms its night vision. The light that is emanated and used to image is virtually imperceptible to the Human Eye. Human eyes are more sensitive at night but will most likely only pick up a very faint light at the source but will not be able to detect an ambient reflection created by that source. All in all it should work fine as a nanny cam.