Barcode Scanner also understands how to read two dimensional barcodes, like QR Codes and Data Matrix codes. For example, the codes below contain a hyperlink to the ZXing Project home page:

You can also represent contact information in a QR Code, and put it on a business card or web site. When you scan it, the results screen provides a choice of actions:

Besides URLs and contact info, QR Codes can also contain:

• Calendar events, which you can add to your Calendar
• Phone numbers, which you can dial
• SMS numbers, which you can text message
• Email addresses, which you can email
• Geographic coordinates, which you can open in Maps
• Plain text, which you can read, then share with a friend