Mechanical

Locks and profile cylinders, whether in situ or dismantled and handed in by the client, are tested for traces of tampering or forcing with implements other than the matching keys. At the same time, the existence of matching and well-used keys, damaged keys, lock-picking devices and other evidence of outside involvement is established.

The evidence assembled is used to establish whether a crime against property was indeed committed or whether a crime was simulated. Such investigations tend to follow on from the overall inspection, but can also be used to supplement results from third party examinations.

Using the most up-to-date microscopes with CCD image recording systems and / or a scanning electron microscope (SEM), locks and profile cylinders are tested for irregular, atypical traces on any of the parts that would be affected during successful unlocking. It is crucial that the evidence comprehensibly points towards an unauthorized unlocking, with additional consideration being given to the lock’s setting during the tampering process.

All stages of the examination process are included in the inspection records and double-checked by a second expert (four-eye-principle).

The inspection records form the basis for the expert report. The expert report includes a photographic record. All images are digital and are processed under the current digital image processing guidelines, using a program which does not allow image content manipulation. The images are integrated in an A4 page format with comments (manipulation prevented) and then copied using traditional processes.

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Electronic

For some years now, nearly all manufacturers of profile cylinders have produced and distributed electronic or mechatronic locking cylinders.

With electronic cylinders, the memory read-out has to take place as soon as possible, usually with the help of a programming device. Mechatronic locking cylinder investigation also involves an additional examination of the mechanical element of the system.

Both types of cylinder require an examination of the electronic locking device, to establish whether this was destroyed by force or whether there are traces of magnetic blocking. These processes are supported by access to the continuously updated databases of professional organizations and inspectorates.

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