Keeping Real Keys, Buttons, and Low-Tech Backups
Okay. We've talked about not putting anything critical on wifi alone, and about water sensors being the cheap thing I actually recommend. This lesson is the wrap-up on that whole idea: what do you keep around that doesn't need a router, an app, or a working internet connection at all.
Here's the thing—every smart device in your house is secretly two devices. There's the smart part, and then there's the dumb part underneath it that still has to work when the smart part doesn't. A smart lock is still a lock. A smart plug is still a plug. If you forget that, you end up locked out on your own porch at 9pm because the app won't load and you have no idea where the actual key is anymore.
Start with the smart lock, if you have one
If you've got a smart lock on your front door, it should have come with a physical key override. Find it now, not during an emergency. Usually it's a small key cylinder on the outside or a manual thumb-turn on the inside that works even with the battery dead.
Cut a real key for that lock and put it somewhere that isn't "in the smart lock app." A lockbox bolted to the side of the house, a spare with a trusted neighbor, whatever works for your family. I keep one with my in-laws, who are about ten minutes away, which is close enough to matter and far enough that I don't feel weird about it.
Also check the battery situation. Most smart locks warn you for weeks before they die, but weeks of warnings you ignore turn into a Tuesday where it's just dead. Put a reminder in your phone to check it every few months, same as you'd check smoke detector batteries.
Voice assistants need a backup plan too
We spent a couple lessons getting your lights to respond to your voice, which is genuinely handy. But if the internet's down, or the speaker's unplugged, or Toast just decides not to cooperate that day—yes, my daughter named ours Toast, we've made our peace with it—you still need a way to turn the lights on.
That's just a light switch. I know that sounds almost too obvious to say out loud, but I've been in houses where someone smart-plugged a lamp and then physically blocked the wall switch with a bookshelf, so the only way to turn the lamp on was through an app that sometimes doesn't load. Don't do that. Keep the switch reachable. Worst case, you flip it manually and lose the smart features for a night. That's a fine worst case.
The recliner button
My dad refused to talk to a machine on principle—still does, honestly—so when I tried to get him set up with voice-controlled lights, that idea went nowhere fast. What we landed on instead was a big physical smart button on the side table by his recliner. One press, lights on. Another press, off. No talking to anything, no app required for him to use day to day.
I bring that up because it's a good reminder that the low-tech answer is sometimes just the right answer for a person or a situation, and there's no shame in it. Not everything needs to be voice controlled. My opinion, which I've said before in this class: voice control is overrated for a lot of stuff. A switch or a button just works. It doesn't lose connection, it doesn't need a firmware update, and nobody in the house has to remember the exact phrase Toast wants to hear.
The water heater sensor, and the 4am wake-up
I mentioned water leak sensors a couple lessons back as the cheap thing I actually recommend, twenty bucks under the water heater, twenty under the washer. I'll add a detail here because it's relevant to this whole "low-tech backup" idea.
Mine went off at 4am one night. I about fell out of bed. Ran downstairs expecting a flooded utility room and it turned out to be condensation, not an actual leak—cold water heater, humid air, completely normal. But here's the thing that mattered: the sensor itself doesn't need wifi to sound the alarm. Mine has a local siren built in, so even if my internet had been down that night, it still would've gone off. That's the backup working exactly like it's supposed to. I was annoyed at 4am and glad about it by 4:05.
When you're shopping for one, check whether it has a local alarm or if it only sends a push notification through the app. The notification is nice. The local siren is the part that saves you when your router's the thing that's broken.
What to actually go do
Walk your house this week and make a short list: smart lock, smart plugs on anything you actually need working, any device where "the wifi's down" would be a real problem and not just an inconvenience. For each one, ask yourself what the non-smart backup is. If you can't answer that, that's the gap to close first.
Before next time
Find your spare key, if you've got a smart lock, and make sure at least one other person in the house knows where it lives. No worries at all if the answer right now is "nowhere"—that's exactly what we're fixing.