Validation of safety-related wireless machine control systems. Wireless technologies have been used for several decades for remote control, but safety-related machine-to-machine applications are still rare. One reason is that message errors and malicious attacks are more probable in wireless communication than in field buses. The wireless communication can be compared to field buses, since they both offer quick throughput via a single channel. The communication is realised by using serial mode communication, i.e. bits are sent one after another.