Decode Covid vaccination QR code with expo-barcode-scanner

[mari-muthu-k]

Hi All
I am working on a React native project to read the Vaccination QR certificate. I am able to read the QR code with expo-barcode-scanner ( output data : some Integers ). But how to decode the output encoded data ?
Thanks!

[sagarbele]

You can use jszip library to decompress it. It is not encrypted. It is compressed

[mari-muthu-k]

expo-barcode-scanner returned 13 digit integer. I think it recognised as a barcode instead of QR code [ even with mentioned format as QR code ]

[uddeshg123]

Did you found any solution for this @Marimuthu04? I have some DIVOC QR codes, when I'm scanning them with expo-barcode-scanner its doing nothing.

[mari-muthu-k]

@uddehye2012
expo-barcode-scanner not supporting this type QR codes.
Even with QR as type I got nothing or got error.
So I've solved it with following steps.

1. Hosted QR scanner in a website[ Instascan & jszip to scan and decompress the data ]
2. Used webview to render the hosted scanner
3. window.ReactNativeWebView.postMessage after a successful scan => then catched the data from the webview
   But It had slight performance issue while loading. So I've used webview cache to reduce the performance issue

[uddeshg123]

Thanks @Marimuthu04, I need some more help on this, so If you don't mind can we connect on Skype (here's the invitation https://join.skype.com/invite/wMC3lNIEliXX or [email protected])

[mari-muthu-k]

Yeah, I'll help @uddehye2012

[prakashbask]

Hi All I am working on a React native project to read the Vaccination QR certificate. I am able to read the QR code with expo-barcode-scanner ( output data : some Integers ). But how to decode the output encoded data ? Thanks!

@Marimuthu04 I tried reading this QR code with expo-barcode-scanner but it does not recognise the QR code at all. Could you please share any sample on how this was done?

[julian-trustgrid]

@prakashbask @Marimuthu04 can you guys give me some ideas how you guys were able to scan it?

[mari-muthu-k]

With this https://github.com/Marimuthu04/cowin-qr-web-scanner