QR Code scan result does not match with the reference value

[andre.prasetyo]

Dear all,

I have a crystal report that contain QR code and 2D barcode that have same reference value. but somehow the QR code shows different value when scanned. meanwhile the 2D barcode scanned value is correct.

anyone have same issue with me and have found the solutions?

anyway below is my formula:

Code: Select all

StringVar CompleteBarcodeString := "";
StringVar DataToEncode := [ValueField];
NumberVar i := 0;
NumberVar Segments :=
QRCodeEncodeSet(DataToEncode, 0, 0);
For i := 0 to Segments Do
(
    CompleteBarcodeString := CompleteBarcodeString + QRCodeEncodeGet(i);
);
CompleteBarcodeString

[glitch]

Does this happen randomly on any data string, or some particular string?

Try encode the same string with the GUI encoder and see if it is an encoding issue first.

[andre.prasetyo]

yes happen randomly. sometime correct, sometime wrong

[glitch]

The Crystal Reports UFL does not support multi-threading. The data could get mixed when you have multiple accesses to the same report simultaneously. This is an issue in Crystal Reports. Change the work flow to isolate the access (for example running report on users workstation, export report to PDF at the server side etc.)

[glitch]

After some hard work digging this issue, we modified the UFL code to work around the issue. The version 5.2.2 (released on Dec 11 2019) contains the workaround.

[SergeyK]

After some hard work digging this issue, we modified the UFL code to work around the issue. The version 5.2.2 (released on Dec 11 2019) contains the workaround.

Hello Glitch, we purchased DataMatrix Fonts & Encoder 5 (developer version) that I understand should contain all the latest updates/fixes. But our user expiriencing the issue with incorrect barcode data after scanning - so they scan the barcode and it reference them to the wrong order number. Could you please provide the details of the workaround or send the link where this one is explained?

[glitch]

The datamatrix UFL is thread safe after 5.2.1 (Sept 2020). You can download the most recent version from the product page http:/www.morovia.com/fonts/datamatrix/.

If you believe that this is our coding bug (the scanned result does not match data encoded), get the content of the string, as well as encoding parameters, and send to support@morovia.com.

[SergeyK]

Currently QR code UFL is multithread safe. If you are using QR Code fonts & Encoder 5 you should not run into the problem.

We'll add the update to DataMatrix fonts soon.

Thank you. Can you please advise when this update is planned to be delivered and how we can get the latest version with the fix? We are using DataMatrix Fonts & Encoder 5 for a long time (but not QR Code fonts & Encoder 5) and our users randomly reproducing the issue.

[glitch]

Currently QR code UFL is multithread safe. If you are using QR Code fonts & Encoder 5 you should not run into the problem.

We'll add the update to DataMatrix fonts soon.

Thank you. Can you please advise when this update is planned to be delivered and how we can get the latest version with the fix? We are using DataMatrix Fonts & Encoder 5 for a long time (but not QR Code fonts & Encoder 5) and our users randomly reproducing the issue.

It is already fixed in 5.2.1. (tracking number 566, https://www.morovia.com/manuals/datamat ... enotes.pdf).