The problem of Firefox OS is the fix focus camera of over 1 meter and the max 5 mega pixel resolution. You can't get sharp barcode images. They are either blurry while to near, or too small while in focus.
I've build a Firefox OS app [1] that is theoretically enabled to scan barcodes, but it won't work with most devices out there.
I've build a Firefox OS app [1] that is theoretically enabled to scan barcodes, but it won't work with most devices out there.
[1] https://marketplace.firefox.com/app/qr-reader