Anti-theft charm

"Most magical objects are now sold carrying anti-theft devices that will prevent them from being summoned by anyone but the owner."

- Miranda Goshawk, Book of Spells

An anti-theft device is a device of some sort that prevents Summoning the object the device is attached to by anyone but the object's owner. For security purposes, most magical objects sold in modern times are equipped with such a device.

Appearances

 * Wonderbook: Book of Spells