There is an AP article that has been picked up by a lot of papers around the world and I'll link to it on msnbc's site. The article is about using quantum physics for encryption via photons (light particles) - rather than the keys (strings of random numbers) we use today. It's pretty far out but not even totally new. There are a few companies already offering solutions (eg MagiQ Technologies) and Harvard is working on the availability on the web. Pretty amazing stuff. I guess in __ years from now, it will be as common as sliced bread.