The additional code disc offers the following possibilities:
- Creation of unique profile, protected against unauthorized distribution before the Bulgarian Patent Office
- Cylinder anti-drilling protection
- Endlessly rotating protective disc with cut profile
- Profile change accomplished through disc replacement without changing the cylinder coding
- Disc mounted with coding with 9 to 24 code pins, arranged in three rows in spiral system
- Individual code disc for corporate clients
- Guaranteed key uniqueness for given client with higher security requirements

The cross-sectionally coding element is an option which can be used for all types of cylinder coding - L21, L29, L52. The additional cross-sectionally coding element increases security and guarantees key uniqueness. The element and its application are patent protected.