BEWARE OF 2 WAY MIRROR
Jivha tells that there is another threat to your privacy lurking behind the two way mirrors in places like female changing rooms or hotel bedrooms. I am not sure whether these are actually happening but here is a clue to detect 2 way mirrors:
CONDUCT THIS SIMPLE TEST: 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, IT IS A 2-WAY MIRROR! (there is someone seeing you from the other side). The reason there is a gap on a real mirror, is because the silver is on the back of the mirror UNDER the glass. Whereas with a two-way mirror, the silver is on the Surface. Keep it in mind! Make sure and check every time you enter in hotel rooms. May be someone is making a film on you.
So better be safe than sorry.