Some great answers here, but if you're doing anything that involves going out and about (e.g. buying phones / cards / starbucks etc) - Don't forget to leave you

Some great answers here, but if you're doing anything that involves going out and about (e.g. buying phones / cards / starbucks etc) - Don't forget to leave your regular registered phone(s) at home or office, and never allow burner and registered phones to be active (powered on) near each other.