Showing papers by "Deutsche Telekom published in 1989"

Credit card with implanted IC

Abstract: A credit card 2 with international standardisation of the external dimensions and the position of the contact areas of the implanted semiconductor chip 1 is constructed in such a manner that the semiconductor chip 1 is arranged on a removable plug-in part 3 which is significantly smaller in its dimensions compared with the credit card 2. This plug-in part, together with the credit card surrounding it, remains useable for the previous credit card applications. If it is pressed out of the credit card, it can be applied as independent minichip card in much smaller terminals (Figure 1).