Wi PLUS USER MANUAL | 19Step 10: Trouble-shooting ViewerSometimes infrared red light (IR light) from ambient light sources may interfere withtouch performance. The troubleshooting viewer shows real time images for debuggingpurposes. Any light interference is marked in green. If green obstacles appear withinimage area, remove to secure proper interactivity.Note: Interactive function is disabled under trouble-shooting viewer, click to exit.