We got called out today by someone who had lost their keys. Their friend had offered to get them in to their house by snapping the lock. When we arrived the handles had been ripped off the door and the lock had been snapped. The lock in question was an Avocet ABS lock and had done what it is designed to do and had remained locked after being snapped. The customer's friend had then attacked it with a drill but it was still locked, although the damage to the door was quite extensive. All of this just goes to show that it is worth investing in good quality snap safe / anti snap locks as they really do keep your home secure. Read more about anti snap locks