Abstract: An apparatus for data transfer with a portable electronic card, for example a payment card or a credit card. It comprises a housing into which a card is introduced. When the card is introduced, a hook is taken along, which is connected to a carriage, which carries compression springs in the form of laminations moulded from one piece with the carriage and which press a flexible insulating foil against the card when due to the introduction of the card the carriage is lowered to the latter by guiding means. The part of the film which is pressed against the card carries metallic contact elements connected through conductive leads to another part of the same foil, which part carries the electronic elements which ensure data processing.