As the video clip below will certainly reveal, the burglar will certainly utilize a tiny apple iphone add-on that discovers infrared light. Utilizing this accessory, they will certainly take a fast image of the PIN pad after you have actually utilized it as well as left. The resulting infrared photo will certainly reveal which switches were pushed since they will certainly show up warmer in the picture than the bordering unblemished switches.
Finding the order in which the numbers were pushed is less complicated than you might assume. In the infrared picture, the switches that were pushed will normally be somewhat various color from each other. This is since the warmer switches are the ones that were touched one of the most lately. Utilizing this understanding, the burglar can identify which numbers were touched in which order.
Fortunately there is a basic method to stop this from taking place. View the video clip to see it done in activity: