Is there anyway to verify the signature of the EU Covid Vaccine QR Code and make sure the QR Code was issued by an authorized entity? Answer Thanks to Gaetano Piazzolla who recently wrote an article on how to verify Green-Pass QR Code Signature. Here is the article link: Green-Pass QR Code Signature Verification He also wrote another article on
Tag: qr-code
Store Binary Data in QR Code (ZXING Java Library)
My Java program needs to send a binary payload via QR Code, but I can’t get it to work. I have tried several QR Code libraries and many approaches, but all seem to have this problem. My current implementation uses ZXING. The problem is that all the Java libraries I’ve tried seem to be focused on String payloads, and do
Scaning QRcode from image (not from camera) using ZXing
I am using the ZXing library for barcode scanning. I want to scan a barcode using this library from an image (e.g., on the SD card) rather than from the camera. How can I do this using the ZXing library? Answer I wanted to test it out before posting it so it took me a while, I’m also using ZXing
Create QR-Code in vector image
I can successfully create QR Code PNG images with ZXing but there is no easy way to get the output as SVG or EPS. How can I create a vector image from the BitMatrix object that is created by the QRCodeWriter? Answer The easiest way I found was to create a PDF with iText and then convert the resulting PDF
How to scan QRCode in android
I found a tutorial on how to scan a barcode. But in my application I have to scan a QR code. How can I a scan QR code in Android? Answer and in onActivityResult():