Useful tip, if you can't see the cursor on your computer screen: move it to one corner by moving the mouse or stroking the touch-sensitive pad in that direction, and you should be able to see it when it gets there.
Curious fact I've just discovered about pedestrian-controlled crossings: as well as a beep when the green man shows, for the benefit of the blind, there's a cone underneath the control box with a rough, tactile surface that spins round when it shows, for the deaf-blind. I've just got back from the shops, and had a feel, and it was indeed there, and span on cue.