https://techcrunch.com/2018/07/17/ups-is-testing-an-amazon-key-style-delivery-program-in-new-york/

UPS has been quietly testing a  program that lets the shipping service deliver packages inside multi-unit homes while occupants are out. The service utilizes smart locks created by Latch, a New York-based smart lock startup that teamed with Jet late last year.

The system is clearly an attempt to stay up to speed with Amazon, which paved the way for this sort of in-home delivery last year via Key (which has since expanded to cars), a program that utilizes Kwisket locks and its own Cloud Cam.