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If you want to make a quick iPhone mock-up for the UI design of a mobile website or an app, then here are a couple of useful templates... Photoshop template:  teehanlax.com Photoshop template:  smashingmagazine.com Both photoshop files consist of vector and screen shot elements at 480×320 resolution so that you can quickly work out what is going to work.

QR codes (Quick Response codes) are those square barcode things.. they have been popular in SE Asia for a while now, but are only just starting to take off with the use of smart phones.  This is an example of a QR Code: Take a picture on your mobile, and your  smart phone QR reader  will jump to the encoded hyperlink.  Great for posters, flyers, catalogues and business cards. Here is a great gadget that will generate a unique QR code based on the URL you type in: