I find myself using the camera on my phone more and more as a way to take notes. I snap pictures of addresses, websites, songs, and any number of things I want to be able to remember. Here's a good example. When I was nimble minded (20 years ago) I knew this chart by heart. Today, I don't waste the few brain cells left that keep me breathing and from drooling on such trivial things when I have a camera in my pocket.