QR Codes (new bar codes used to display mobile websites). You may not have heard of QR Codes (Quick Response Codes), but it’s probable that you’ve seen them virtually everywhere. A QR Code is a three-dimensional bar code found on a variety of print ads and signs which, when scanned by a mobile device (i.e. smart phone or tablet), links directly back to your mobile site. You can then place your tollfree number on your site, allowing your customers to reach you quickly and conveniently. There are QR Code generators online that can provide you with free QR Codes, and there are also sites offering inexpensive mobile-site creation services. If you find the right provider, you can have a QR code and mobile site working for around $50.