Royal Mail has launched a tamper proof stamp which should stop people pealing off old stamps and reusing them. The problem whilst it might seem minor costs Royal Mail tens of thousands of pounds every year. Although stamps are franked when they go through the sorting office, the markings on them are not always noticeable and often stamps with little markings on them are peeled off and used again. The new stamps, however, should make it impossible to reuse them. They have two oblong strips on either side of the stamp so that when the stamp is peeled off the strips are left behind. This leaves a useless stamp with two holes in it which should now be unusable.