QR Codes

Level 70

@davy_yg

Just tell me why it's not possible? My point is as long as you can able to imagine that, it might be able to execute on some extends.

Now it's time to discover how to do that.

https://github.com/SimpleSoftwareIO/simple-qrcode

Level 67

@davy_yg Most retail location use barcodes, but there's really no reason they couldn't use QR codes, they just aren't as necessary. QR codes can be scanned from further distances and typically that is not necessary at retail store registers.

Some stores like Amazon even have technology that doesn't require scanning and just charge you for the product when you leave. I would assume this is the future of that market.

Yes, you can implement QR codes on a responsive site. I currently use a QR code package in one of my Laravel apps right now to generate QR codes for Google Authenticator... this one...

What you are talking about scanning codes FROM the app, I already answered in another thread. TRUST ME, I've gone completely down this rabbit hole... it IS possible, but it is INCREDIBLY complex, really buggy and I wound up ripping out the code because it sucked so bad. If you really want to go down this road, look into the image capture api and figure out how to snag an image from a QR code, then send that to an interpreter to return a key and compare to your data.

The best way to do scanning is using an app because you will have much more granular control of the camera AND it is designed to handle QR and barcode scanning. If you built an app, you could do both.

1 like

https://github.com/werneckbh/laravel-qr-code

Level 27

You mean you eventually cancel creating the app for QR code since it is difficult? How about the scanning the QR codes through the web? Is it possible? Is it difficult? and is it possible to scan and suddenly put it in shopping cart just like in the video with web responsive?

Our company currently have web responsive that you can open in mobile phone and we want to add QR Code scanner and generate the QR Code if it could produce the intention that I want.

See with laravel I can only find this one:

and I am not sure if it could put the product to the shopping cart if you scan the QR Codes. It looks like can only store the following information:

Calendar Event
Email Message
Phone
SMS
Text
URL
meCard
vCard v3
Wi-fi Network Settings

Usage

Level 67

@davy_yg Didn't cancel the whole app, just the scanning feature we planned for inventory. It was a personal project, so not much on the line with that.

I literally just explained all of this in great detail. Yes, it's possible. Yes, it is extremely difficult and not well documented. You'll get about a 20% success rate from scanning, it is extremely unreliable and wonky. The image capture api on a cell phone is not intended for fine detail imaging. It is intended for really crappy video streaming. It also is experimental and doesn't work on most browsers, which is another huge hurdle as you can't just tell every user to "Use Chrome for mobile"...

We basically were trying to make it so cell phones would replace $300-$500 Telzon guns in grocery stores. Easier said than done.

The easier thing to do would be to use an image input that allows access to the camera and immediately uploads and parses the QR code. Easier, but also a much jankier approach.

This package will work with Laravel, I literally use it right now for generating QR codes. https://github.com/SimpleSoftwareIO/simple-qrcode

For interpreting... https://github.com/khanamiryan/php-qrcode-detector-decoder

2 likes

Level 27

So you never tried create a web responsive to scan QR code with mobile camera only apps? And with apps also challenging to do like 20% success rate. So the rest 80% the QR Codes is not detected.

I find many packages for qr codes for laravel: https://packagist.org/?query=qrcode

the laravel package that you use to scan qrcode is it successful?

Level 67

@davy_yg I did try and technically succeeded. With only a 20% success rate of scanning it was not worth doing. 80% of the time it simply would not scan / work right. It worked but not well enough not to piss off end users, so I scrapped it.

Yeah, good job finding packages for Laravel... notice that the top link for the most downloaded one that is for QR codes and Laravel is the one I posted earlier. That's why I chose it.

1 like

Level 27

So it's the same way with laravel web responsive right? only 20% success rate for scanning the QR code?

Level 67

@davy_yg What does responsiveness have to do with this? You're grabbing an image from the camera... loading it to the backend... then interpreting it to a key. NONE of that is front end and the interface you build it with could easily be made responsively... that isn't even a concern.

Displaying a QR code could be done responsively because it simply displays a generated image... If you're using bootstrap, slap an img-fluid class on the QR code and call it a day. Boom, responsive.

Also, why are you glomming onto that 20% success rate? Suffice it to say, it was a shitty implementation... there is a reason why no one else has commented on this thread, because they've either tried it and it wasn't worth doing or they know how crappy it would be because they understand the technology trying to do this. Even with a brand new iPhone or Galaxy or Pixel... it isn't the camera that is the problem... hooking into that to dynamically snap a QR code is delayed by the image capture API, so it is slow / blurry and isn't smart enough to recognize codes on its own. That needs to be done with JavaScript. Building a native app for Android/iPhone lets you hook directly into the camera hardware and most native builders already know how to detect barcodes and QR codes and are very snappy and good at it. If you NEED to do this, trust me and build a NATIVE MOBILE APP. Something that would go on Google Play Store and the Apple App Store. NOT a web app like Laravel.

1 like

Snapey

Level 122

All goods use simple barcodes.

Unless your store owner wishes to relabel every item they sell, stick with simple barcodes.

Level 67

@snapey ^^^ This (completely agree)

1 like

Level 27

Our store does not have the goods ready for checkout right away. Only the sample goods not for checkout. So we plan to use QR Codes. Pay first get the goods later when it is ready. It could be around 15 minutes to prepare or more.

Then if it is possible with apps to use QR Codes just like my first video post link, we will consider about it.