| 摘要 |
A novel write/read head for magnetic stripe card readers includes a magnetostrictive read element in a structure which permits the close spacing between read and write heads required of insertion type value card apparatus yet provides magnetic isolation of the read head from the write field generated at the gap of the write head. The use of a second magnetostrictive element in the read head permits the implementation of a security system which precludes the possibility of altering or counterfeiting the cards. Accordingly, high denomination value cards can be issued with a relatively high degree of confidence and that magnetic stripe cards, in general, can be issued with that same degree of confidence. |
