Characters exceeding 42 characters cannot be scanned by the camera

[YoySun]

Hello, why can't the camera scan my text when it exceeds 42 characters? How can I fix this?

[zpao]

There is always risk using an embedded image, as it covers part of the QR Code. It is up to you to decide if it works for you. You can use a higher error correction level to force more modules, which allows for the same size image to cover a smaller % of the QR Code.