What type of security tag is this?
Could anyone tell me what type of security tag this is?
I have Googled and Wickipediad en.wikipedia.org/wiki/Security_tag
around the subject looking for, 'induction coil security tag', but I mainly find information about the flat strip type.
I'm new to electrickery so I am guessing it is an induction type of device?
Also, is the green component a capacitor?