Amazon Key is now available for St. Louis residents.

Amazon’s latest innovation allows in-home delivery and secure home access for guests and service appointments. The service is exclusively available for Prime members.

The key allows Amazon customers to let trusted people like their house cleaner, dog walker or friends into their home.

How does it work?

Using the Amazon Key app, customers can track their in-home delivery with real-time notifications, watch the delivery happening live or review a video of it after the delivery is complete.

Each time a delivery driver requests access to a customer’s home, Amazon verifies that the correct driver is at the right address, at the intended time, through an encrypted authentication process. Once this process is successfully completed, Amazon Cloud Cam starts recording and the door is then unlocked. No special codes or keys are ever provided to delivery drivers.

Amazon says the delivery driver will not move on to their next delivery unless the customer’s door has been re-locked.

Customers can check eligibility by visiting www.amazon.com/key.