Somewhere over the Atlantic, the stove question hits

The more often you travel, the more the leaving routine runs on autopilot. Lock the back door, turn down the heat, grab the passport, go. That speed is useful until you're through security and can't picture a single one of those steps.

By then it's too late to go back. What helps is a record from the moment you did each check, ideally something you can look at from a departure lounge. Here's how to set that up, with or without an app.

What gets in the way

• Routines done too often to remember

  Packing and locking up for the twentieth time this year doesn't leave a distinct memory. Last month's trip and this one look the same in your head.

• Hotel rooms and rentals

  Each place has a different safe, a different charger outlet and a different door. It's easy to leave something behind at checkout.

• No way to go back

  At home, you can turn the car around. Once you've boarded, the doubt just sits there for the whole flight.

How One Loop helps

• A photo from the doorstep

  Take a timestamped picture of the locked door and the stove knobs on your way out. You can look at it from the gate.

• One-time Loops for trip tasks

  Make a Loop like "Hotel safe emptied" or "Return rental keys" for one trip. Close it, and it archives itself 24 hours later.

• Works in airplane mode

  No account, no sync and no signal required. Everything is stored on your phone, so it works anywhere.

• Runs on your Mac too

  One Loop also installs on Apple silicon Macs from the App Store, though each device keeps its own loops because there's no sync.

Loops to start with

• 
  Front door locked Camera

  The single most common thing travelers worry about once they're gone.

• 
  Passport packed Camera

  A photo of it in your bag pocket saves you from patting yourself down in the taxi.

• 
  Stove and oven off Camera

  Knobs are easy to misread when you're rushing to the airport.

• 
  Hotel safe emptied Simple tap

  Set it as a one-time Loop so it clears after checkout.

• 
  Laptop and charger Simple tap

  Chargers left in hotel outlets are a classic loss.

• 
  Windows closed Simple tap

  Rain and burglars both like an open window in an empty house.