https://www.recode.net/2017/10/25/16538828/amazon-key-in-home-delivery-prime-camera-lock >Amazon on Wednesday announced Amazon Key, a new program for Prime members that lets delivery people drop off packages inside of customer homes. >To make Amazon Key possible, Amazon has introduced its own $120 internet-connected security camera called Amazon Cloud Cam. Customers who want to participate in the program need to purchase an accompanying “smart” lock to allow delivery people to enter their home. Combined camera-lock packages start at $250.