If you need to share the door access with family members, you will need an Apple TV (4th generation with tvOS 12.0 or later), an iPad (with iOS 12.0 or later), or a HomePod connected to HomeKit as a home hub. For more details, please visit: https://support.apple.com/en-us/102557 and pair it with your iPod, iPhone, or iPad (with iOS 12.0 or later).