To prevent piracy, the software would scan the GPS receiver’s COM port (usually COM2 or COM6) at a specific baud rate—like 4800 or 9600. But here’s the twist: It wasn’t just looking for data. It was looking for a specific frequency of $GPRMC sentences . If the hardware didn't reply with exactly the right timing, Navione would simply... vanish. The screen would go blank. No error message. No "license invalid." Just a black void.
Continues tracking the vehicle smoothly inside tunnels where GPS signals drop. navione gps software exclusive