UPC isn’t detected

[Leonick]

Describe the bug UPC-A and UPC-E codes doesn't seem to be detected even when configured to

I've tried both my own implementation of Html5Qrcode and with you example page. Tried your example UPC pictures, several codes on actual product boxes, and picture from Google search. None are detected.

Other barcodes such as EAN work.

Screenshots If applicable, add screenshots to help explain your problem.

Smartphone (please complete the following information):

• Device: iPhone Mini 12 and iPhone 7
• OS: iOS 15 and iOS 14
• Browser: Safari

Additional context

[mebjas]

Can you try with following config

var config = { 
    fps: 10,
    qrbox: {width: 250, height: 250},
    // Important notice: this is experimental feature, use it at your
    // own risk. See documentation in
    // mebjas@/html5-qrcode/src/experimental-features.ts
    experimentalFeatures: {
        useBarCodeDetectorIfSupported: true
    },
};

[Leonick]

Unfortunately not, as the BarcodeDetector API isn't supported by Safari on iOS.

[vishakha-simply]

@Leonick hey did you find any solution to this ? I'm struggling with the same

[Leonick]

@vishakha-simply I did not. Had to use a different solution. github.com/ericblade/quagga2 Examples are out of date and documentation not as good so bit trickier to set up, but it works.

[ROBERT-MCDOWELL]

why not to grab the quagga2 code that works with UPC code an integrte it in html5-qrcode?

[marcinheniborg]

Hey @mebjas, awesome job with this repo. Thanks! I'm really excited to use it with the inventory app that I'm developing based on the Google App Script. However I'm experiencing the same issues as other commenters. The app is not scanning codes from the popular items which are with UPC codes. Do you foresee looking into this anytime soon? Thank you!

[erikmillergalow]

@mebjas Do you have a sense of whether or not a fix for iOS barcode scanning will make it into any releases in the near future? I'm evaluating this package to replace quagga, the speed and accuracy is great but I need to support both Android and iOS.

[gbsystems]

2.2.1 Not scanning for me in FF+Chrome on Android +1 for rectification of this bug, spoiling an otherwise excellent piece of software

[mebjas]

Will look into this based on @Breno1288 's PR.

To be tracked for v2.2.7

[mebjas]

Fixed in zxing-js. Will be published in version 2.3.1. Now UPC-A and UPC-E will get scanned without useBarCodeDetectorIfSupported support - thus across platform.

Track progress on this version at: https://github.com/mebjas/html5-qrcode/issues/605

[mebjas]

Issue fixed with version 2.3.1 -- please help with verification (please comment in issue #605 if the issue is still reproduced in certain platform).

Github release: https://github.com/mebjas/html5-qrcode/releases/tag/v2.3.1 NPM: https://www.npmjs.com/package/html5-qrcode/v/2.3.1

Closing this issue for now.