Prostock-studio/Shutterstock

Video doorbells are so commonplace that many people treat them like a necessary part of home security. Heck, we've done that plenty of times, given all the articles we've written about the perks of installing video doorbells and so on. However, some people treat these devices like computer security apps that actively quarantine threats as they enter your PC. They're not.

In truth, video doorbells are little more than automatic sentries that keep an eye on whatever you point them at. They can tell you if a package is waiting at the door, or if someone is trying to break into your home, but that's about it. If you're not paying attention, burglars can rob you even with blaring doorbell alarms.…