Published: Feb 11, 2013 9:43 PM EST
Updated: Feb 12, 2013 12:29 AM EST

NAPLES, Fla - You may think, if you lock your doors at night you and your family are safe, but WINK News investigated and found out your locks probably aren't secure.

In fact, there are thousands of videos online showing thieves how to break into homes using a "bump key."

The owner of Safe & Sound, Mark Gabel, showed us the technique and tools used by thieves and within seconds he was able to break open a standard front door lock.

"I was surprised and horrified at how easy that was to get into someone's house," says Naples resident Bonnie Grace. "It's so quick."

The demonstration was done on Grace's front door. She has lived in her Naples neighborhood for 22 years and always felt safe. But recently, she decided she wanted more security.

"Within a one to two week period some patients in the practice where I work had told me they had been robbed and every single one of them was during the day," says Grace.

Grace called Safe & Sound and had a new, more secure lock installed. "That should be the one place where you're really secure," says Grace. "You certainly don't want to worry about someone coming in at night."  

Gabel says Grace's old lock is the norm among his clients. In fact, he says he can open 9 out of 10 homes with what's called a "bump key." It allows thieves to open up multiple types of locks with a single key.

"The technology isn't new," says Gabel. "Everyone is just hearing about it because of YouTube and the internet."

It's a scary thought for home owners when you look at the new crime trends. Naples Police say more and more thieves are driving over from the East Coast to break into homes in the middle of the day. A map on the Collier County Sheriff's Office website shows more than 700 burglaries in the last six months.

"Most people take it for granted. They think the lock because they turned it, it's working properly or its functioning properly," says Gabel. "So many times they're not."

Gabel says to keep your home safe, install locks that don't work with the "bump key."

If you want to learn more about home safety, several free seminars called "Who Has My Keys?" are coming up over the next two months.

The seminars will be hosted by Diane Pisani, Your Home Watch Professionals and Mark Gabel of Safe & Sound.

The seminars will be held at the Community Room at the Calistoga Bakery café, 7941 Airport Pulling Road in Naples:

Wednesday, February 27 at 2:30pm

Thursday, March 14 at 10:30am

Wednesday, March 27 at 2:30pm

Wednesday, April 10 at 10:30am

Wednesday April 24 at 2:30pm

For more information on the seminars go to: www.WhoHasMyKeys.info

For more information on Safe & Sound go to: safeinflorida.com