Once you have activated your SmartCard, you can turn your card ON or OFF by logging into your online enhanced IM account. When your SmartCard is ON, the switch is green. If you want to turn your SmartCard OFF, so that it cannot be used, just click on this switch. Your SmartCard cannot be used when it is OFF.
Click the switch again to turn it back ON.
Remember that when you turn off your SmartCard you are not turning off your online enhanced IM account.