Reliable banking Helpers

Since my Mac program east bank does not support the HBCI smart card system, I switched three years ago to the chipTAN process and got my Sparkasse the mobile device.
The first one I brought back, because it did not transfer at all. When I then the second device had the same problem, I rummaged the Internet and found that only the brightness of the screen is the cause. The unit needs a real White to function. Since then my Kobil working properly and also the first would have worked.

Therefore, full marks because the unit can not help it if I do not make the correct transfer conditions.