surely implies that the person asking has that information already, so why is it whenever somebody rings me and asks me to confirm my name and address and I ask them to give me the info to 'confirm' it they wont, erm 'data protection'. Well you know what, I'm protecting MY data and they are not having it.
Random caller 'Hello, I'm calling from blah blah blah, can you please confirm your name and address'.
Me 'Hello, yes of course, here's all you need to know even though I don't know if you had it in the first place or that you are actually the company you say you are'.
Head scratching moment over.