With the increase of mobile devices (iphone/droid etc...) one nice way of providing certain information is the use of the QR ("quick response") square barcode. You see them on business cards, real estate signs, magazines, products, etc... and the list goes on. This little barcode makes getting URL's, location coordinates, any text, or contact information onto your mobile device instantly. With a barcode application installed, you just point the camera at the code to read its content. Read more about Why should you use your own Personal QR Code?