The new reversible key system ix TwinStar is especially well protected against unauthorized copying by a floating double-role in the key. Because of a complexe system – 11 spring-mounted tumblers, 10 pin tumblers and 1 locking bar- it is suitable for homes as well as large objects with high safety standards. In addition, the convenient "2 in 1" version for registered cylinders (from quarter 3/2017) offers the possibility of deactivating the key set by transcoding the cylinder in case of key loss. The System offers high protection against manipulation by 23 lock authorisation requests per key.