I am not native English speaker, and I just saw this sentence written in a sealed box:
"Tamper evident opening"
Is that sentence correct?
I mean, I think it means "If you tamper with this seal, it will be evident that the box has been opened". But, I think also that following the English grammar, it would say "If you open the box, and it is evident you did so, try to tamper it so nobody realized it".
Wouldn't the correct way be "Tampering evidents opening"?
Best Answer
It is not a correct sentence, it is simply a label. It is indicating that "opening" the package is "tamper evident" (which, as you correctly understood it to mean, means that if someone were to tamper with the product or package, it would be noticable). This is commonly used in medication packaging to ensure that the product is in fact what it is supposed to be, and has not been replaced with something else or altered in any way.
Aside from boxes, this concept is also applied to bottles in a couple different ways, one of which involves an airtight seal with either lower pressure or no air inside the bottle, so the cap makes a "pop" noise when it is opened. This keeps the contents fresh (or, in the case of soda or beer, keeps it from going flat).