Keep it minimal. A burner phone on a local SIM, no data plan, and a VPN that routes through a trusted country keeps the GPS off. Use a Tor‑enabled browser for any needed internet, and encrypt any notes you keep in a small, password‑protected file. When you’re moving, stay off public Wi‑Fi, swap devices regularly, and never leave a trace of the same device behind. In the city, the quietest moves are the ones that leave no record.