Unwished item increase in shopping cart when returning to item page
Consider the following scenario. A customer has purchased an item so that it is registered in the shopping cart. After that he is visiting another page before returning to the page of the initial purchase, by using the backward function of the browser (normally after resending the page). Now, the shopping cart is updated with one more piece of the initially purchased item. So, from originally only having bought only one item, the customer is ending up with two. Is there any way to prevent this from happening?