|外形尺寸||round（mm）||适用范围||supermarket, clothing store, department stores|
hard tags are placed to soft goods with pins or to hard goods with lanyards. they are normally reusable for years. but some of retailers do require disposable hard tags to be source tagged onto commodities in order to improve circulation efficiency and save cost of labour at points of sale. when goods are checked out, hard tags will be removed by detachers. there are hundreds of designs of hard tags with different lock mechanisms and appearances. but the purpose is the same – difficult to be removed without authorization and easy to be removed by special detachers.
selection of hard tags depends on many factors.
1 – operational principle of system
2 – performance of system – decided by system design and levels of noises from the environment and the power source
3 – width of detection aisle of system
4 – items to be protected
5 – expected performance of the detection by the customer
6 – customer’s preference on the appearance
7 – cost