For the most part, high security lock products have a minimum of two locking systems, and can include a type of normal shearline operated by a key cut combination, and some type of secondary locking system that requires extra milling or extensions in the key blank, allowing the key system to be patented.
It’s true to say that all security system companies started off with a patented key system, but they will take a number of factors into account when deciding which high security system to promote, recommend and ultimately, sell. They’ll want to look for when the patent might expire, whether the manufacturer offers a wide range of lock cylinder applications, and if their preferred distributor stocks a full line of the products, among other things.
If you’re concerned as to whether your lock and key systems are secure enough, schedule a consultation with a local locksmith and have them conduct a thorough review of your home or business.