EM security systems are based on proven technology. A magnetic strip is adhered to a book or attached to a CD, DVD or videotape (or its case).

The dimensions of the strip and its appearance vary to accommodate the size of the
item and the need to conceal the strip’s presence.

During check-out, if an item has not been deactivated, the security gate at the library’s entrance/exit will detect the strip and will sound an alert.

When the item is returned, the EM strip is reactivated with a deactivation device.