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The 'Personal' version of the software limits network connectivity between the Main (Trainee) application and the Supervisor application. Communication between these applications is only permitted if the applications are running on the same device, or if  a direct connection between two devices using Automatic Private IP Addressing (APIPA) has been implemented.


APIPA is a DHCP failure mechanism. Under APIPA, DHCP clients obtain IP addresses when a DHCP server is not available and for this reason, connection between two separate computers will not occur if either is connected to a router. APIPA restricts the range of IP addresses used by the two devices to - and and both must reside on the same subnet.


A side-effect of this architecture is that access to the Internet is not possible using the 'Personal' version if the Main application is running in 'Supervised' mode whilst under the control of an attached device.