When Convenience Trumps Security: Why "Smart Locks" in the CNET Smart Home Make Me Uncomfortable

"Roughly 20 minutes later, as I started packing up to go home, all of the lights in the house shut off -- the good night command had finally gone through. Thinking IFTTT was finally working, I gave the command to unlock the door one more time. Still, nothing happened. I continued to pack up, reassuring myself that I could try again tomorrow, when I had a frightening thought: what if the unlock command was going through the same delay, and would work 15 to 30 minutes later? I was about to leave the CNET Smart Home, and I was the last one out. What I didn't want was for the door to automatically unlock 20 minutes after I'd locked up and driven away."