I had installed the smart lock and a doorbell camera only eight days earlier after coming home to find my gaming monitor moved and my underwear drawer half open. My mother had cheerfully admitted that she had lent my old spare key to Tiffany so that some of her friends could stay there after a local festival.
No one had asked me for permission at that time, and everyone had acted offended when I told them that I minded the intrusion. The app loaded slowly while my pulse thudded in my neck, but eventually, the dashboard appeared to show that the front door was online and the auto lock was enabled.
I tapped the live doorbell feed to see the hallway outside my apartment, which featured the same ugly beige carpet and dim lighting that I saw every day. The old deadbolt was still in place because the landlord required it, but the key Tiffany held was now completely useless for entering the unit.
The lock responded only to the digital app or a private code that I had not shared with anyone in the family. I realized that my sister had no idea the situation had changed, so I texted her to say that Mom did not have a functional key anymore.