Logins on web pages in public or non secure PC's can be a risk factor. E.g. username and password can be tracked by a key logger.
You can secure your login in the web front-end via a SMS TAN.
Next time you login, a SMS with a TAN code will be sent to your mobile phone. You have to enter the TAN code to get logged in.
If you are on your daily PC (which is secure) you can add this PC to the list of trustworthy devices. This would prevent sending TAN codes.