My mom checked into her hotel and noticed a tiny blue dot sticker on the door. She’s freaking out—what does a blue dot mean?.

Some hotels mark the room where a lost-and-found search was conducted.

🔹 System upgrades
When hotels install new keycard readers, WiFi routers, or thermostats, they often label rooms temporarily.

🔹 Employee communication tools
Not all staff read English fluently, so color-coded systems help keep operations universal.

In other words:
Hotels love stickers. They use them all the time.

🕵️ What I Did When My Mom Found the Blue Dot
Instead of panicking, I told her:

Take a picture.

Check nearby doors.

Call the front desk politely.