QR Code is a open format, and is the most popular matrix code using nowaday. QR Codes can store addresses, URLs and personal contacts. The QR Codes can be read by PCs, mobile phones by installing the decoding software. Generator is also free of charge.
I have tried to use "PsQREdit" to generate both URL and personal contacts codes, and read by a Nokia phone. (in softbank format)
http://en.wikipedia.org/wiki/Barcode
http://en.wikipedia.org/wiki/QR_Code
VRY GOOD software for PC:
http://www.quickmark.com.tw/En/basic/downloadPC.asp
Decoding Software for mobiles:
http://www.mobile-barcodes.com/qr-code-software/
http://www.beetagg.com/
Generator tested:
file://napsrv2/Dept_Backup/IT/Study/QRCode/PsQREdit
or
http://www.psytec.co.jp/freesoft/01/
QR-codes test:
- http://www.newasiabooks.com

- Roxy's contact info: