With a vidieo camera. If you get a chance pick up the Aug issue copy of North American Whitetail. In it is a story about useing your vidieo camera and placing it at your other spot. It will run for up to 4 hours or so. Set iy up on a tripod about 2 feet off the ground out in the open where you can record a good distance. Not only will you see what went by but it will give you the time and you can retrieve the camera at hunts end lessing the chance of theft. Do this a couple days in a row to see if it is a pattern or a chance passing. I' m going to try it at the under road passage I talked about a while ago.