Patent ID: 7898409

Claim:
A circuit for exclusion zone compliance, said circuit comprising: a satellite navigation signal reception component configured for receiving satellite signals; a navigation data deriving component communicatively coupled with said satellite navigation signal reception component, said navigation data deriving component configured for deriving position data and a clock time from said satellite signals; a non-volatile memory component communicatively coupled with said navigation data deriving component and configured for storing an encrypted data set describing boundaries of an exclusion zone; a data blocking component communicatively coupled with said non-volatile memory device and navigation data deriving component, said data blocking component configured for controlling an accessing of said encrypted data set; and a data control component communicatively coupled with said navigation data deriving component, said data control component configured for blocking an output of a signal from said circuit in response to either of an indication selected from a group consisting of: an indication that said circuit is located within said exclusion zone and an indication that said output of said signal is not permitted based upon said clock time.