Writing a web app is actually pretty simple when using the free tools that Google provides.
Links used in this video:
BeQRious – http://www.beqrious.com/generator
Desktop QR code scanner – http://www.tinkernut.com/demos/284_qr_codes/QRreader.air
I-nigma – http://www.i-nigma.com/SupportedDevices.html
Spotlike – http://spotlike.com
Paperlinks – http://www.paperlinks.com
Google Generator – http://www.goo.gl
Believe it or not, shaving cream is an excellent way to prevent mirrors or windows from becoming fogged over. Just smear shaving cream over the window/mirror and wipe it off using a damp cloth. It should now prevent the window/mirror from becoming fogged over from steam. If it wears off, just repeat the process.