If you think you're homie safe just because the door is locked, think again. Bad guys may be able to slip into your house with very little effort by trying something called lock bumping. Action News 5's Darryl Phillips uncovers the threat and shows what to do about it. Memphis and Cindy Sinclair has a one year old son to her. Security is everything. It was certainly important before but now that we have a baby that's all I think about. I just want to make sure that he's okay. She was stunned by this story and you will be too. Everyone who sees this in action is stunned. I think that's pretty scary. That someone could break into our house. It's called lock bumping and safety experts say this technique works on more than 90% of homes. The good guys need to know what to watch out for. The bad guys are going to find out what to do. So why should the public not know what's happening? The trick a special series of cuts on a regular old house key and a tap or a series of taps will do the trick. This key does not fit this lock. This one does. There's no way that I can make it jiggle it, wiggle it, do anything to make it fit. That's bumping. Memphis locksmith Glenn Piper says you need to worry about this because it is so easy. Even a 10-year-old can do it. We tried to talk with police from multiple agencies about it but they wouldn't even do an interview either because they didn't know about it or didn't want to take heat for telling people about it. But with lock bumping how to's buzzing across the internet, we decided it was time to find solutions. The alarm systems are more expensive than it's lock. So if you go down the road of expense, this is the cheapest solution. This will put a lock on the door that can't be fake. We're talking about 150 bucks. There are some things you can do. Piper says alarms and pets are good deterrents. Lighting around your house helps too. But he says the best thing you can do is spend a little money on better locks. Locks by medical and Schlage Primus can't be bumped. They're more expensive but they'll do the trick. When you try to put value on your property, that's easy enough to do. But how do you put the value on your personal safety? You can't put a price tag on that. How can you afford not to have a lock that you can't pick up this way or that you can't use a bunk key on? The answer he says is that you can't and with the digital underworld abuzz about this new threat, safety experts say it's time to key in. Darryl Phillips, Action News 5. Now you probably noticed that we did not show you how to make a bump key. Several viewers emailed us today concerned we would be telling criminals how to use this technique. Our goal was to make you aware so that you can better protect yourself. We felt it would be irresponsible not to tell you about it. We've prepared a lot of solution-oriented information for you at WMCTV.com. Just click on the store.