My son bought a new keyboard for his Mac, and he paid for it via his phone (actually he picked up a keyboard that had the barcode sticker missing, so he had to take it to the counter). Basically, he scanned the code and his account was charged... the receipt was emailed to him. (Complete story-- the person who checked him out used the same system he had tried to use, but had to key in a few more numbers as the sticker was missing.)
On the drive home, we were brainstorming how this technology might be useful in the future... perhaps a grocery carriage that scans whatever you place in it, and that sounds an alarm when junk food is placed in it... or one that helps you stick to your budget... or perhaps that accepts you shopping list (via email) and then displays the brands with the lowest prices...
The potential seems interesting... but at the same time dangerous. We have decided to buy a good iMac to replace the family computer that is is the living room, and we are going to save the cash for it rather than using credit or savings. It was tempting, very temping, to simply scan it with my son's phone and walk out with it!
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