An integrated data reader and electronic article surveillance system, and methods of operation. Access to each portion can be with a sliding sleeve that has a specific internal profile. A data input register, a retransmit register, a data output register and a multiplexer are provided within the cache memory device. 1% to 30% by mass, the mass ratio ab of the component to the component ranges from 12 to 41, and the component content of the composition ranges from 60% to 99. The end faces of the end pieces extend perpendicular to the movement direction of the linear motor.