Jtuseo said:
QR Codes are used as a quick way to get a person to a specific website. You scan them with your smart phone and it takes you where ever the person who generated the QR code wants you to go. This can basically be anywhere on the internet. A lot of people use them to drive you to their website, but most marketing people use them to get you to a specific page on their site. Whether a sales page, a specific service, piece of information, special offer, etc.
I don't think most people would really have any intention, let alone the time, to get their phone out, open the bar code app and be able to scan your QR code while moving or parked at a light. Your actual website would probably be better, with a list of your services.
Here is a good QR code generator:
http://qrcode.kaywa.com/
It is super easy to use and if you would like to add QR codes to your marketing materials, this is a good option.
Remember, that the person with the smart phone has to have an app that can scan the QR code. A couple that I am familiar with are:
QR Reader
http://itunes.apple.com/us/app/qr-reader-for-iphone/id368494609?mt=8
QR Droid
https://market.android.com/details?id=la.droid.qr&hl=en
Red Laser
http://redlaser.com/