Smart homes that let in strangers

amazon key

You're not home, but that doesn't mean tech companies can't swing by and drop off your dinner order or a 12-pack of paper towels. Amazon kicked this odd category off earlier in 2017 with a service that lets delivery people access your home through a special smart lock. Look for more partnerships between delivery services and smart home technology over the next year.

First published January 22, 2018: 1:11 PM ET

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