Useful device for people with vision impairment

I had no idea that these things existed… a little device that helps visually impaired people to know when the green man is showing at crossings:

Pat x

My daughter told me about these - very useful for some people. Clever idea.

my ROVI told me about this way back in 2003! i use it everytime i have to cross the road using one of these crossings xxx

Hi pat my husband uses these every day to cross road since losing his central vison in both eyes, they are a life saver as he cannot see the green man .Its the side roads that are the danger,ive been with him when he uses them you should see the people in cars staring at him thinking how does that man know to cross.Its the look on drivers faces that stop at the lights that make me smile.xx julie