Always checking hotel room mirrors

Checking hotel room mirrors is a widely recommended safety practice due to concerns about two-way mirrors, which can be used for spying. Here are a few reasons and methods to check your hotel room mirror:

Reasons to Check:
Privacy Concerns: Two-way mirrors can be used to observe the room from the other side without the knowledge of the person inside. This can be a significant invasion of privacy.
Security: Ensuring that there are no hidden cameras behind mirrors can protect you from unauthorized surveillance.
Peace of Mind: Knowing that your room is secure can help you relax and enjoy your stay.
How to Check:
Fingernail Test:

Place your fingernail against the mirror.
If there's a gap between your nail and its reflection, it’s a standard mirror.
If your nail directly touches its reflection, it could be a two-way mirror​ (Dailymotion)​​ (Dailymotion)​.
Lighting:

Shine a flashlight directly at the mirror.
If it's a two-way mirror, you'll likely be able to see through to the other side when illuminated.
Tapping:

Tap on the mirror. A normal mirror will produce a dull sound due to the backing. A two-way mirror might produce a clearer, more open sound indicating a hollow space behind it.
Inspect the Installation:

Look at how the mirror is mounted. If it’s embedded in the wall, it might be worth checking further as standard mirrors are usually mounted on the surface of the wall.
Practical Tips:
These methods are not foolproof, but they can help you identify suspicious mirrors.
If you have any doubts about the mirror or any other part of your room, inform hotel management and request a room change.
For more detailed information and further reading, you can explore articles and resources about travel safety and hotel room privacy concerns.