Hello, I wonder if you can point use in the right direction to modify the Koha system we’ve just installed? We’ve set up a basic system to use with barcodes and barcode readers for both items and patrons. The problem is that our ID card barcodes add two leading 0s to staff IDs (7 digits vs 9 digits for students) and also the last number is not part of the ID number but the card issue number. Somehow we want to intercept the string to remove any leading zeros and also delete the last digit before it gets used as the patron number by Koha. Could you give us a pointer as to where I should be looking (i.e. any documentation or which module to look at) and what string I should be processing? I’ve found the patrons.js, in autocomplete, but suspect that is running when text is been entered, however the barcode enters the full string and probably a CR which I suspect is the equivalent of the submit being pressed. Basically I’m looking for hints as to where the string goes when the Submit button is pressed. Can anyone give me a hint? Many thanks, Jeremy P.S. I did post before but didn’t get any responses and can’t reply to me post as I didn’t get the post by email.