This is our own comparison system that ranks the varying levels of security offered by our range of products. We hope this system will help you to choose the best lock for your needs. It's a 12-point system with 1 being simple, deterrent security and 12 being extreme security. If you live in the 'burbs and have a Rottweiler next to your bike or motorcycle, well, maybe a lock rated a 1 is all you need. But, if you live in the middle of a city you want extreme protection; a Kryptonite lock with a rating of 12.