I take photos of both cars with my phone, then fast-forward through the clip, scanning the street to see if there’s a dog walker, a late-night jogger . . . anyone. The street and sidewalk are empty. I glance toward the kitchen, then delete the clips. Going into the app settings, I locate the storage section and check the video-overwrite schedule. It is set to Never, so I quickly change it to a twenty-four-hour overwrite. By this time tomorrow, the entire day and the rest of the system’s history will be gone.

