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Description
An EM strip/EM label is a security tag. Libraries use it to prevent book theft. It protects books and other materials. This strip is part of an EAS system. That system detects unauthorized item removal. It uses electromagnetic fields.
What is an EM Strip?
An EM strip is a thin, flexible metal strip. It’s often made from a special alloy. It typically measures 4–6 cm long. Libraries embed them inside books. You’ll find them between pages or in the spine. These strips are inexpensive and durable. They can remain in a book for many years.
How Library Security Labels Works
Active (Magnetized) State: When magnetized, the strip responds. It reacts to an EM field at the security gate. If detected, an alarm sounds. This indicates the item is not checked out.
Deactivated (Demagnetized) State: Library staff demagnetize the strip. They use an EM deactivator during checkout. In this state, it won’t trigger the gate.
Reactivation: Upon return, the strip is remagnetized. Library staff or automated systems do this. The book becomes protected again.
Key Features of the Security Tag
These security tags are stealthy. You can hide them in a book’s binding. They are also reusable. Unlike some tags, EM strips reactivate. They are very durable, working for thousands of uses.
EM strips are designed for detection. They trigger an alarm at EM security gates. This happens when an active strip passes through. Their construction is thin and flexible. They contain magnetic material. Often, they have an adhesive backing. This makes attachment easy.
Deactivation/Reactivation is a key feature. This is vital for libraries. Items are deactivated when borrowed. They are reactivated upon return. An EM label deactivator/reactivator does this.
Concealment is important. EM strips hide within items. They go inside a book’s spine. They can also hide in packaging. This makes them less obvious. Thieves find them harder to remove.
Types of EM Strips: EM strips come in various formats. Book Strips are longer and thinner. They fit inside book spines. They can have single-sided or double-sided adhesive. Some even have a “tail” for easy insertion. CD/DVD Strips/Labels are smaller. They attach to cases or discs.
Compatibility is broad. EM strips work with many systems. These include 3M Tattle-Tape and Bibliotheca. FE Technologies systems also work.
In summary, EM strips are fundamental. They provide security in EM anti-theft systems. Their ability to activate and deactivate is key. This makes them ideal for library use.
Common Uses of Library Security Labels
These labels are common in many libraries. Public, academic, and school libraries use them. Archives also employ them for document security. They often pair with check-in/check-out systems. These can be manual or automated.
Do you want to know more about how EM strips compare to other security tags?
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