This is scary stuff!

Have you ever left your house and miles away wondered if you locked the door? Well apparently it doesn't matter if you did or not because thieves and miscreants can now open almost any door with a technique called bumping. First watch what it is: There are special lock sprays and bump-proof locks you can buy. The above video also mentioned two lock brands that are bump-proof. Here is one cost efficient way to stop bumping. I've never used this product so I can't advocate it but the video is very informative: