Why do you need my address? Mandy August 23, 2018 19:13 Updated Follow For patients who qualify, Propeller sends out sensors directly to your home. We need your address to do that! Related articles Why do you need my email address? How many sensors do I need? What is my group name? How long does it take to get a sensor? How do I know if I have an account? Comments 0 comments Please sign in to leave a comment.