I just came across another neat application on my N95. You can use the built in camera to scan barcodes, also called QR Codes. Nokia provides their code reader free of charge, built right into your N95!. Keep reading for a full overview on how to read the barcodes with your phone, and create your own.
Your phone should pick up a link to http://simplehelp.net. Scanning codes directly from your screen work best if you’re using an LCD display. Your phone may have trouble reading the code if you’re using a CRT monitor. If this is the case, try printing the code first.
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thats quite neat that you can use a phone as a barcode reader...you can do a similar thing on the macbook i believe