Do Game Cameras Work Through Glass?

I believe they do. Though I'd imagine the sensitivity would be diminished.

Yeah if the camera has a flash it would blowout the picture. I remember that from my homebrew film gamecameras circa 2000. You had to use separate pieces of glass to cover the lens and flash or the light would "travel" through the glass and you would get whiteout. With infrared, it may not be a problem.

Here's what you do. ~ Set up your camera behind the window. That night go outside and walk in front of the camera at different distances. Review your results.