I am tracked, I know and I don't care. Then there is the other me. Military Encryption. Separate device on a separate connection. Double VPN.
Good luck.
You don't need to close or to police the borders. all you need to do is make the invaders feel unwelcome enough for them to swim back to Africa on their own accord. And yes, some MG-42 action goes along way in assisting with this feeling of wellbeing in Africa.