The applet below allows you to map your own blindspot (for the applet to appear below, you will need to be using Internet Explorer 4.5 or later as a browser). Click on start to begin. Position the cursor within your blindspot and move it outwards in one direction until you can just see it. Clicking there will leave a mark. Reposition the cursor within your blindspot and repeat, moving the cursor outwards in different directions each time.