
One day, this may no longer be a problem. Radio Frequency Identification (RFID) technology is allowing individual products to carry a small RFID tag like the one shown above which allows them to be identified and scanned much more quickly and efficiently. Here is a commercial created by IBM showing what this technology could do in the future.
As you can see, the guy in the video looks like a thief even though he isn't. The benefit here is that stealing would be much more difficult as you would get charged for whatever you walked out the door with. Obviously, it would take a fair amount of time to work out all of the kinks in a system like this. There would be no cashier to ring your items up so you would have to check the receipt closely to make sure you got charged the correct price for your items. However, perhaps the RFID could completely replace UPC codes so as items arrive at the store, the entire bundle could be scanned and given the correct price by means of radio frequency. This would help eliminate pricing errors.
Businesses would benefit by not having to pay cashiers :), but at the same time those cashiers would lose their job :( The RFID tags on merchandise can be used with advertising as well. Digital signs can be set up to communicate with RFID tags. An example would be a person picking up a pair of headphones at the store. They are walking around and pass by a digital sign. The RFID tag could trigger the sign to show an ad for those particular headphones. This will reinforce the purchase decision. I see RFID technology becoming more popular in many different industries as time goes on.