Problem description:

I bought a book myself, but every time I go to the library for self-study, I always sound an alarm. There seems to be a magnetic stripe. The librarian won't let me bring books into the library. Is there any way to remove this magnetic stripe?

Analysis:

What you said is somewhat unreasonable. Generally, when you buy a book, you will demagnetize the magnetic stripe on a book in the bookstore.

But it is also easy to solve. My cousin runs a bookstore. At present, most bookstores have magnetic induction alarms. The alarm is connected to two boxes, one is magnetized and the other is demagnetized. Books in the bookstore are all affixed with magnetic strips. Whenever a customer pays for a book or borrows a book, the staff will remove the magnetism, so that the alarm will not sound when the book buyer leaves the store. After the borrower returns the book after reading it, the staff will copy the tape, which is the function of the magnetic stripe. If there is a magnetic stripe on your book, first explain the situation to the bookstore staff, and then erase the magnetism on the degaussing box or tear off the magnetic stripe.