of the telegram being transmitted the example described herein is for illustration purposes only and not intended in any way to limit the scope of the present invention in particular the initial length of the unique identification need not be limited to 9 bytes but instead may be any desired length compression of the unique identification is preferably reduced to only two bytes but once again the number of compressed unique identification may be selected as desired the logic function performed is not limited to the xor function nor is the specific error detection scheme restricted to that described in the example above accordingly the present invention substantially reduces or prevents the control device from programming an unintended or non targeted device when more than one possible device is located within the wireless communication range of the control device if the implantable medical device receives a message from a control device with a unique identification different from its own the implantable medical device will discard the message and not send any acknowledgement or response message back to the control device thus while there have been shown described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof it.