A friend and I were discussing an awesome effect he came up with where you steal the light from someone else's lamp and throw it back. The subject of using known technology to create magic came up and how amused we are that when you are known as a purveyor of the magical arts, people want to believe so badly in it and you, that the FURTHEST thing from their mind is technology.
I do an effect with my cell phone. People really trip out on it. Damn near everyone has a cell phone and all of the ones nowadays have a picture gallery. All of those galleries work relatively the same way. However, when they see a playing card plucked off the screen of a phone, all of the knowledge of how THEIR phone works goes right out of the window.
There are a handful of good iphone apps for magic, and despite the fact people KNOW that an iphone is an wholly advanced paperweight, they still don't go to it immediately as the reason behind the magic. It's baffling, but we can and will exploit this fact to our advantage. Cell phones, laptops, CD players, wireless this and that... it's all around us everyday. Some will use it to light their home or run their life. The rest of us evil bastards will use it to entertain others and make ourselves look like gods.
So the next time you sneer at something that is an obvious use of some known tech, think twice.
That wireless scanner might just have another use.