The command system.readcard is used to read cards.
- cardvariable [string]
Variable that will store the card number.
- keyvariable [string]
Variable that will store the value of the key pressed.
- timeout [integer]
Waiting time until the command cancels the operation.
- variablereturn [integer]
Variable that will store the return of the command.
In the example above, the 4 variables will store values that were generated by the command system.readcard. The application will wait for user interaction through a card or by pressing any key during the time set on the property timeout.