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Barcode Detection API

developer.mozilla.org

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Re: Barcode Detection API

#111

Post by jupp0r »

makeitdouble wrote: post #86
pests wrote: post #77

Earlier quoted context omitted.

You can use a public CA like LetsEncrypt then. Exposes you to the certificate log but you should be secured already anyways. Just have to use the DNS challenge (unless you wanna poke a hole for certbot) to grab it

Looking at guides for LetsEncrypt on internal IPs/domains, it seems to be as painful as creating and managing your own CA: https://geontech.com/using-letsencrypt-ssl-internally/

DNS challenge is easy to pass and automate if you can programmatically add txt records to your DNS zone. Every major cloud provider supports this with command line tools, so it's a matter of moving the DNS zone there and writing a shell script and a cron item in the worst case.

Re: Barcode Detection API

#112

Post by numlock86 »

Cool. Another feature that Firefox won't support. Same with the WebSerial API and others. I sort of understand their reasoning that they want to make a web browser and not an application platform, but that's where the web is shifting to ... or rather has already for a long time. And people wonder why every new tech/browser is based on Chromium all the time. Well, this is one of the many reasons.

Re: Barcode Detection API

#113

Post by Scoundreller »

I’m happy to see things like this. My ISP used to ask for a picture of my docsis modem sticker because people kept making mistakes entering in the MAC address.

Unfortunately, the csr was just keying them in and keyed mine in wrong so I was without internet for a few days.

Something to automatically pick it out would be a lot better.

Re: Barcode Detection API

#114

Post by crossroadsguy »

djbusby wrote: post #36

There is a full copy of the zxing library in JS. It's been working great for my purposes - scanning QR and C128 Barcodes. E: https://github.com/zxing-js/library

ZXing is/was solid. I used it for Android, then moved to (suggested) Google’s ml-kit offering around a year ago.

ZXing is pretty much abandoned now. It was anyway “kind of” from Google.

Re: Barcode Detection API

#115

Post by fy20 »

Bilal_io wrote: post #20
PaulHoule wrote: post #9

Earlier quoted context omitted.

At this point in time it's a pain point for me that Android devices don't usually have built-in QR reader software. I can tell iOS users to just "scan the code with the Camera" app but I have to tell Android users to find a QR scanner app on the app store. My experience with an actual bottom-of-the-line prepaid phone was that the first QR scanner app I downloaded from Google Play worked right the first time but I had…

I've been scanning QR codes with my Android phone for a long time. I know at least two native cameras work, Pixel's and Samsung's since 2019. But I am sure legacy phones with older android versions don't support it natively.

I have a flagship Xiaomi phone and the built in QR code scanner is garbage. I went to a restaurant with friends which only had a QR code for the menu (which turned out just to be a link to the root of their website - why not write the URL too?). In the end I had to take a picture of the QR code, then crop it, then open that in the scanner app.

Re: Barcode Detection API

#116

Post by alex_suzuki »

marcjuul wrote: post #107
michaelt wrote: post #45

Earlier quoted context omitted.

Is pylibdmtx not up to it?

It's not great but libdtmx is the best open source datamatrix decoding as far as I know.

libdtmx is great, but it's really slow. Can't do real-time detection (as in scanning from a continuous camera feed) with it.

Re: Barcode Detection API

#117

Post by apinstein »

jaxn wrote: post #54
bob1029 wrote: post #23

This stuff has been a nightmare for us for a long time. We have to scan pdf417 barcodes from physical identification as part of our offering. Recently, we stumbled upon some cheap USB keyboard emulator 2d scanners that can pick these up very reliably. For our product/customers, this is a viable path. We have tested probably 30 different webcams by this point. The only 2 that are as reliable as the handheld CCD scanne…

We also scan pdf417 from ID cards. In our case, it was much easier to just use hardware 2d scanners. We are a b2b SaaS and they are scanning IDs all day, so a hardware solution makes sense. The weird thing about pdf417 is that there is a lot of helpful info our there, up until a point. It's like everyone is collaborative and asking/answering questions up until the point they really figure it out, but those last few s…

I used the microblink one for a small toy project and it worked well in all browsers.

https://demo.microblink.com/self-hosted-api/pdf417

Re: Barcode Detection API

#118

Post by danachow »

bob1029 wrote: post #23

This stuff has been a nightmare for us for a long time. We have to scan pdf417 barcodes from physical identification as part of our offering. Recently, we stumbled upon some cheap USB keyboard emulator 2d scanners that can pick these up very reliably. For our product/customers, this is a viable path. We have tested probably 30 different webcams by this point. The only 2 that are as reliable as the handheld CCD scanne…

Purpose built barcode scanners typically don’t fumble with autofocus have faster 0-latency autoexposure (adjusted during frame readout) and even the good 2D CMOS sensor ones will start decoding linear or stacked codes such as PDF417 while the frame is being transferred. That can’t be beaten for latency.

Re: Barcode Detection API

#119

Post by schappim »

disillusioned wrote: post #109
schappim wrote: post #66

Earlier quoted context omitted.

We use the Linea Pro too w/ the SwipeTrack browser making them available in our web app. We've previously used both the Infinite Peripherals SDK w/ an iOS app, but SwipeTrack have a pretty good JS API [1]. Funnily enough, the Linea Pros have been going down hill. They swapped out the barcode engine and it is not fast / crisp. Sometimes faster to just use the iOS Camera (w/ Swipetrack) instead of the Linear Pro's sled…

Wow, I don't like the sound of that at all. The version we're using is an older.... 5? 6? So it would predate those issues but that's literally.... half the point of the thing! Lightning fast barcode engine + range + extended battery + pistol grip!

The ones with miniUSB cables are good, the USB-C, not so much.

Re: Barcode Detection API

#120

Post by masklinn »

unqueued wrote: post #91
bob1029 wrote: post #23

This stuff has been a nightmare for us for a long time. We have to scan pdf417 barcodes from physical identification as part of our offering. Recently, we stumbled upon some cheap USB keyboard emulator 2d scanners that can pick these up very reliably. For our product/customers, this is a viable path. We have tested probably 30 different webcams by this point. The only 2 that are as reliable as the handheld CCD scanne…

I found the most reliable barcode scanner to be an old Symbol usb scanner. I also found that I could scan barcodes off of a screen with a laser scanner if I put a translucent white plastic bag over the screen. Maybe someone with more knowledge about optics could give some insight into why that trick works. My understanding is that laser scanners should only be able to scan by reflection, and shouldn't work off of a s…

Note that they’re scanning 2D “pdf417” barcodes.

Reading a linear barcode is quite easy, the shitty webcam of my 2010 macbook pro was enough for Delicious Library to pick most every article instantly, usually faster than I could even present the article.

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