There are a couple of reasons why the check may be blurry:
- The picture of the check was taken too far away.
- The lighting where the picture is taken is too dark or too light.
- The camera may not recognize untraditional checks. Some routing or account numbers may be placed in different places on checks. The software may not pick these numbers up.
- It helps to place the check on a dark background. If helps the camera "read" the check better.