Some time (1-2 months) after the warranty (purchased in December 2010 directly from the manufacturer) were from one day to the next a lot of points the LCD matrix display spread over the entire defective. Reading is only guesswork. And that with a device that has been used only a few times a month. Since I am not the only one with the problem, I can only advise against the device.
Some banks offer free shipping the other TAN on your mobile phone an alternative to this device.
