Security card e.g. credit card for use in e.g. cashpoint, has pattern of bars which is placed in its inner side, where pattern contains code which can be read optically or electronically from outside

摘要

The card has a pattern of bars (1, 2) which is placed in its inner side. The pattern is measured electronically and optically for examination, where the pattern contains a code which can be read optically or electronically from outside. The safety pattern is printed on a transfer ribbon which is attached during the manufacturing of the card. The pattern contains a start signal for reading the code.