A security tag is the device that sounds an alarm if goods leave unpaid. Remove the security tag.
The hard ones contain ink that ruins the garment if they are forced. A security tag left on by mistake is the reason half of all shop alarms go off.
1nounsecurity tagThe device that sounds an alarm if goods leave unpaid.
“The security tag was still on and the alarm went at the next shop.”
security tag is a device.
Practised in Shopping & Money