Used the barcode scanning bracket printed on the Makerbot to attach the scanner to the door frame. First though about having the scanner on the other side of the door, but due to space limitations, had to switch to the other side of the door. This was not a bad idea as it required only a single hole to be drilled into the red bracket, and the hole was in the middle (height-wise) so it wouldn't break if the hole was to close to the edge.