MUL-T-LOCK Interactive® Platform

Mul-T-Lock®’s High Security cylinders have a special telescopic pin tumbler mechanism with internal and external pins. Both the internal and the external shear lines must be aligned simultaneously in order for the plug to rotate..

The patented Mul-T-Lock plug has a special structure. When the top and bottom pins, plug and body meet, a three-dimensional shear line is formed, creating an almost perfect spherical shape. Steel inserts enhance anti-drilling resistance. These features provide an added security dimension, amplifying the Mul-T-Lock cylinder’s pick-and-drill resistance for High Security needs. When master keyed, additional side pins or back pins can be incorporated. 

The Interactive® system combines the special telescopic pin tumbler mechanism and special features of the Classic system with a spring-loaded pin in the cylinder plug produce a ‘virtual combination’ only when the key is inserted in the lock.

The Interactive patented key and key blank provide increased control over key cutting to achieve an even higher level of key security. Additional keys are cut after presentation of a Mul-T-Lock key card and verification of customer identity in accordance with Mul-T-Lock key cutting procedures, which may be obtained through professional Mul-T-Lock locksmiths. Interactive technology is retro-compatible with the Mul-T-Lock Classic system, allowing existing locks to be upgraded.

Mul-T-Lock’s patented High Security Interactive platform raises the user’s level of security to new heights, thanks to several special features:

  • A spring-loaded pin placed inside the cylinder plug, which produces a “virtual combination” when the key with the floating pin is inserted.
  • Mul-T-Lock’s unique telescopic pin tumbler mechanism, with internal and external pins – requiring the simultaneous alignment of both internal and external shear lines for the plug to rotate.
  • A specially designed plug, which forms a spherical, 3-dimensional shear line with the top and bottom pins, within the cylinder body.
  • Key limitation is ensured by the patented key and key blank, supplied together with a coded Mul-T-Lock key card in every Interactive package. Additional keys may be cut by authorized Mul-T-Lock dealers, upon presentation of the key card – in accordance with Mul-T-Lock’s official key cutting procedures.
  • Steel inserts with high drill resistance
  • High pick and bumping resistance
  • Optional side and back pins, specially suited for master key systems.

The Interactive platform meets the requirements of some of the most stringent European and American standards.

The Interactive platform is retro-compatible with the Mul-T-Lock Classic platform, allowing the upgrading of existing locks from Classic to Interactive High Security.


MUL-T-LOCK Interactive high security products available for purchase online:

MUL-T-LOCK Interactive cylinders

MUL-T-LOCK Interactive door locks

MUL-T-LOCK Interactive padlocks

MUL-T-LOCK Interactive utility & furniture locks