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Lock Bumping: Dangers and Prevention

Lock bumping or key bumping is a technique used by skilled locksmith to open locked doors in lockout situations and became a real problem for homeowners becuase this method gained popularity among thieves in order to break into homes

Lock bumping involves using a key that was specially cut and known as a bump key. It can fit into most door locks and can manipulate the pins of almost any cylinder lock which is the most common lock used in residential properties. 

When the bump key is inserted into the lock and then tapped or “bumped” with an object like a screwdriver it creates a momentary gap between the pins that allows the lock to be turned and opened without the correct key.

How do you prevent lock bumping?

To prevent lock bumping consider installing bump proof or high security lock like an electronic or biometric lock.

Reinforcing door frames and using a secondary deadbolt can also deter lock bumping because the process is very noisy and by having more than one lock means it will take longer and someone will surely notice.

What locks Can not be bumped?

Locks with advanced security features that are designed to resist lock bumping techniques.

High Security Locks

Brands like Medeco, Mul-T-Lock and ASSA offer high security locks with unique keyways and complected pin configurations also Kwikset SmartKey locks are resistant to bumping.

Electronic Locks

Keyless electronic locks which operate using a keypad or a FOB do not have a traditional chylinder.

Biometric Locks

These locks use unique personal identifiers like fingerprints or an eye scanner and gon’t use keys at all.

Disc Tumbler Locks

Disc tumbler locks used in some padlocks and cam locks use rotating discs making them bump resistant.

Magnetic Locks

These locks are not so common and use magnetic keys and magnetic pins which also make them bump resistant.

Smart Locks

Some smart locks which are operated via smartphones or codes do not have the traditional keyholes that are vulnerable to bump keys.

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