permanent read error, unbearable waiting

I use the device now for about a year and have sought advice in various banking forums. Regardless but
- In what angle I hold the device to the screen
- How hard I try, the flicker windows size set with millimeter accuracy,
- Which I choose Flickergeschwindigkeit
- How bright / I kant Rest reaching the monitor do
- How calm I also hold the hand (Book Ellenbogenstüzte)
etc.

... The unit is operating at perhaps one of 10 attempts and makes micht just sick! Fill a Überwesung hand goes faster by far.

Admittedly, from me speaks of anger, because I have just given up after 15 minutes for a referral, but I hope soon a functioning unit to another company to find. (As the device worked as unreliable from the outset, batteries are probably at least not the only problem - if it does, I will review in the coming days to revise).

Dr. Hofmann.