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The Hotel Key Card Question Nobody Asks

Laura Hobson, Co-Founder & COO, YoursGlobal · · 2 min read

No consumer scan can guarantee that a space is free of surveillance devices. YourSweep supports a room check; combine app results with visual inspection and appropriate help when something seems wrong.

We spend a lot of time thinking about WiFi and cameras. The thing that opens your door gets far less attention.

Most hotel and rental locks rely on a card reader at the door. Security researchers have publicly documented weaknesses in some NFC-based lock models, including cards that can be cloned. That doesn’t mean your door is compromised. It means this is a layer worth knowing about.

What YourSweep checks

The NFC feature looks for signs of tampering at the lock, including:

  • Cloned key cards
  • Unauthorized cards on the lock
  • A hidden device attached to the reader

This is separate from camera detection. It’s about the door itself.

What to do with the result

If the check comes back clean, you’re done. Lock the deadbolt or latch as usual and get on with your evening.

If something looks off, you have easy options:

  • Tell the front desk and ask for a different room
  • Ask for your key cards to be reissued
  • Use the deadbolt or security latch while you sort it out

If you ever feel unsafe, contact local emergency services.

Calm, not paranoid

We’re not asking anyone to inspect every door they walk through. We’re saying that when a check takes seconds, it’s nice to have it. Think of it as a smoke detector you carry in your pocket: you hope never to hear from it, and you sleep better knowing it’s there.

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