Deadbolts are the most secure because they need to be engaged when the door is shut. They have a unique locking device built into the bolt, that can't be forced back into the door, thus preventing unwanted entry. The deadbolts sets back into the door 1 inch vs. a Spring bolt which sets back 1/2 inch.
Bars, Bolts and Chains
Most, however, can be overcome with brute force. They should be used as additional security measures only, and never relied upon as standalones. The truth is, a determined burglar can beat any door lock.
The deadbolt is definitely a better lock than a standard doorknob lock. It is harder to break down or pry open the door with a deadbolt, since it is thicker and goes further into the frame. But really, if someone wants to get into your house, two locks instead of one is not going to stop them.
A common misconception with deadbolt locks is that they're nearly impossible to open once locked. This simply isn't true. With the right tools and the proper training, a locksmith can have your door opened in no time. Locksmiths have the tools needed to get into your home no matter the situation.
It's easy to pick a deadbolt lock. In fact, when you find out how easy it is, you might want to replace all your keyed locks with electronic ones. This isn't to say that lock picking doesn't require skill and practice — it does — but the technique is so simple that anyone can understand it.
Unfortunately, you can not unlock a deadbolt with a credit card. Credit cards will only work with slanted-latch-style locks. Furthermore, the slant of the latch must be facing you so that you may press it in using your card.
A bump key can open any lock that it fits into. It's helpful to have in your pocket if you ever lose your keys, because it can open your door lock and your deadbolt, even if they normally require seperate keys.
To open a deadbolt without a key, a drill machine is one of the most efficient ways to open the lock successfully and easily. You just need to find a drill machine to unlock the lock if you are ashore out of the house. Just by holding the drill on the lock, you can initiate drilling.
Deadbolt door locks are the most secure type of key lock and are usually used on a home's exterior door. Available in single- and double-cylinder styles, deadbolts are rated according to their strength from Grade 1 to Grade 3. A Grade 1 is the highest grade and provides the most security.
While no lock is 100% guaranteed to keep out intruders, installing a deadbolt, as opposed to just having a standard lock, will significantly increase the security of your home.
Having a single sturdy lock on your door is perfect. However, two locks could add extra protection to your door/home or place of business. So one or two sturdy locks are okay for a front door lock.
Bump keys are specially cut keys that can bypass the security mechanisms built into traditional pin and tumbler locks. Bump keys are also referred to as “999 keys” because all of their ridges are cut to the maximum depth (999) in a key-making machine.
Master key: The master key can open all locks you have in your residential or commercial property.
Tape a coin over the door's strike plate.
Use thick tape, like masking tape or duct tape. You may want to place the coin over the door's latch. This can hold the door handle at an open angle, allowing you to push the door open and closed without turning the knob. This will also prevent the door from locking.
Want to know how to break a lock with a hammer? Place your fingers into the shackle loop and pull to create pressure. Once done, start pounding the side of the padlock with a hammer again and again until you successfully bump the lock to open. Reuse the lock if it is still working.