... 1Single -track.2. It can be various Card reader head,Card Reading Magnetic HeadsMagnetic Card Machine Read / Write Head.Such as: ... Write Heads,ATM magnetic head,Magnetic Stripe Card Readers,Card Reading Magnetic Heads.3. Usage:Card Reading Magnetic Heads Used for point of ... sale (POS) terminals, ID security, and access control .Available in 1, 2,, 3 ...