I borrowed a CD from the library and noticed that on the actual CD, there were 2 thin silver bars taped onto all the CDs. They are about 3 inches long and 1 millimeter thin.
What are they for?What are those thin silver lines from a CD I borrowed from library?
they are security devices, its just like when you go to the store, if the cd's aren't properly lent out then an alarm will sound showing that someone is stealing the cds
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