Mirrors, due to their natural properties, reverse things when you look into them. That's why the writing on your shirt looks backwards in a mirror. That's not a big problem for most people, but mathematician Andrew Hicks, it was a challenge.
Using all sorts of math, he's created a magic mirror that actually shows things un-reversed. No, there's no camera inside and it's not a screen, it's merely a specially bent surface that precisely reflects the image in a way that you'll be able to read what's written on your shirt. Practical? Maybe not, because I think I'd be really disoriented brushing my teeth in front of this thing, but cool nonetheless.