Hi,
first thanks for your kind words. But I'm sorry, since I'm German I only can find german instrauctions for it - can't even find the right term for this kind of foil. Go to your local copyshop who offers also custom printed coffee cups and ask for it. There are also diy ceramic foils out there which work with inkjet printer but I don't recommand that - way more steps and less good results - spend that little extra money on your local copy dude and his laser printer.
How does work? Well, like the average watersilde decal. But since its laser printed you don't have to cover it with a small clearcoat film to protect it. Just throw it into the water, apply it to your enclosure, let it dry for several hours and then put into your oven at 170°C for about 40min. After that it's burned onto the enclosure and won't come off anymore. After that process it's also pretty resistent to scratches -tried to scratch it with scissors but no, no success it still sticks pretty well.
Cheers
Helge