Hi there!
You can try to use the camera of a Mobile Phone to see if there is a signal.
Try first with a remote control in a dark room.
If you see the remote blinking on the screen of the mobile your camera at least does not have a (good) IR filter.

Then try it with your Targus.
For me the signal is very, very faint but still visible as a blueish, purpelish flicker when i press a key.
Results may vary from camera to camera
