For those of us who aren't made of money, try a red flashlight held on the skin. Move it around till you can see a vein. Works great for me, I've used veins I'd never seen with the naked eye.
But in a hospital setting, yes, i'm glad they have this. Hopefully will ease some of our people's pain and embarrassment over being stuck a million times and then them acting like it's our fault they can't get it... even if it is.