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Tuesday, August 25, 2009

2-Way Mirror (Useless Chain Mail)

2016 May 26, 11:38am

Website replaced by Facebook Link.


Original Post

This website is useful for verifying if the email you receive is a Useless Chain eMail or not. Here's an example; I received this via email. This email has been around since 2002.

For info, good to be a little cautious.

Can you tell when you are in a hotel room, restroom, motel etc. with a mirror whether it is in fact a mirror or 2-way glass?

Here's how:
I thought it was quite interesting ! And I know in about 30 seconds you're going do what I did and find the nearest mirror... Do you know how to determine if a mirror is 2-way or not? This is not to scare you, but to make you aware. A policewoman who travels all over the U.S. and gives seminars and techniques for businesswomen passed this on. When we visit toilets, bathrooms, hotel rooms, changing rooms, etc., how many of you know for sure that the seemingly ordinary mirror hanging on the wall is a real mirror, or actually a 2-way mirror (i.e., they can see you, but you can't see them)? There have been many cases of people installing 2-way mirrors in female changing rooms. It is very difficult to positively identify the surface by just looking at it.
So, how do we determine with any amount of certainty what type of mirror we are looking at? Just conduct this simple

Place the tip of your fingernail against the reflective surface and if there is a GAP between your fingernail and the image of the nail, then it is a GENUINE mirror. However, if your fingernail DIRECTLY TOUCHES the image of your nail, then BEWARE, FOR IT IS A 2-WAY MIRROR!

"No Space, Leave the Place" So remember, every time you see a Mirror, do the "fingernail test." It doesn't cost you anything.

Remember: "No Space, Leave the Place"

Ladies: Share this with your girlfriends, sisters, daughters, etc.
Men: Share this with your wives, daughters, daughters-in-law, mothers, girlfriends and friends.

Going to this link we find out that it's a Useless Chain Email. See what this website has to say about this email that was sent.


I've been unable to track down any reliable source (policewoman or otherwise) of this information, nor does the NYPD have anything to do with this tragically misinformed notice.

Can you really tell if the mirror you're staring at hides a pair of leering eyes using just your fingernail? The simple answer is no. All you can tell from the "fingernail test" is what type of mirror you're looking at. Some mirrors (called second surface mirrors) have the reflective surface on the "bottom" of a sheet of glass, so you look through the glass to see it, thus creating a gap. The other type of mirror, a first-surface mirror, puts the reflective surface on top, thus no gap. However, this type of mirror is more expensive and usually only used where precision reflections are necessary.

The 2-way mirror discussed above is not a mirror at all, but rather a window made of specially treated glass that uses varying intensities of light to mimic the reflective surface of a mirror. When light is bright on one side, and darker on the other, the glass will look like a mirror from the brighter side. A good example is a mirrored office building. During the day, you can't see into the building, but at night, you can clearly see into any lighted office. If the light intensity is the same on both sides of the glass, it will appear to be just a normal piece of glass.

If you really want to know if the mirror you're using is 2-way, just turn the lights off. Of course, you might look mighty silly standing in a dark bathroom trying to see the little people in the mirror, so hope nobody walks in on you. Break this chain!


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