Amazon.com is probably further along on this idea than anyone. Using a special smart lock set and an Amazon security camera, the Amazon Key system allows packages to be placed inside your home. Using a smartphone, you can watch the door opened, your package placed inside, and the door closed and locked again.
Walmart is testing a similar system in Silicon Valley in partnership with smart lock maker August Home where a Deliv driver puts away your order while you watch him through a smartphone app connected to your home’s security cameras. The person gets in via a one-time access code. While the access code and surveillance could build trust, Walmart has perhaps a higher hurdle to get over than Amazon.