40 42 includes a unique device type identifier each device type may interact with a predetermined reconfigurable display type using an interface specifier developed for the combination of device and display subsystem thus when hmi controller 34 detects the presence of a new electronic accessory it determines the device type for the accessory and checks whether it currently has an interface specifier to support interaction with the device stored in memory 35 if the desired interface specifier is present then hmi controller 34 can communicate core functionality messages between the reconfigurable display and the accessory device if an appropriate interface specifier is not already contained in memory 35 then hmi controller 34 takes steps to retrieve an appropriate interface specifier if possible a memory in each reconfigurable display subsystem provides a local archive for storing a plurality of interface specifiers each of which defines interaction between the reconfigurable display subsystem and a respective electronic accessory whenever an additional interface specifier must be retrieved it may preferably be obtained using a universal resource locator url of a server that contains a further collection of hmi interface specifiers such a server may also be a local archive in the vehicle directly connected to dynamic local network 36 as shown by a server 43 in fig2 server 43 is a local server containing a first group of hmi interface specifiers 44 corresponding to the configurable display type zero additional hmi interface specifiers are stored in other groups for.