Why do you need my address? Mandy August 23, 2018 19:13 Updated Follow For patients who qualify, Propeller ships our sensors directly to your home. We need your address to do that! Related articles Why do you need my email address? What medications can I use with Propeller? - United States How many sensors do I need? What is my group name? How long does it take to get a sensor? Comments 0 comments Please sign in to leave a comment.