Giesecke & Devrient Gmbh

Trustonic Limited

Axel Heider

Erich Englbrecht

The invention relates to a method for displaying information on a display device (D, D) of a terminal, particularly a mobile terminal, wherein the terminal contains a microprocessor unit in which a normal runtime environment (NZ) and a protected runtime environment (TZ) are implemented, wherein display data (DD, DD, DD', TDD) can be provided for reproduction on the display device (D, D) by means of the normal runtime environment (NZ) and the protected runtime environment (TZ). In this case, at least some display data (DD) provided by means of the normal runtime environment (NZ) are transferred to the protected runtime environment (TZ), which checks whether the transferred display data (DD) satisfy one or more security criteria, wherein if they do not satisfy at least one security criterion then the display data (DD) are rejected or are altered such that they can be distinguished from display data (TDD) provided by means of the protected runtime environment (TZ) when they are next reproduced on the display device (D, D).

Method for displaying information on a display device of a terminal

In a method in a portable data carrier for executing an additional functionality in the data carrier, whereby the data carrier comprises a memory and whereby the additional functionality is called up by means of the one access of a conventional read command ordered from outside the data carrier to the memory of the data carrier, the additional functionality is further specified by a respective further access of at least one further conventional read command to the memory of the data carrier.

Portable data carrier having additional functionality

On a portable data carrier () with a communication interface () and a control device () the control device () allows a transaction in a communication network () between a communication device () connected with the data carrier () via the communication interface () and a network server (). For this purpose the control device () sends, in response to a request (S; S) concerning a transaction between the communication device () and a network server (), received from the connected communication device () via the communication interface (), a request redirection message (S; S) concerning the transaction to the communication device ().

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Munich, Germany

Axel Heider