A barcode reader (or barcode scanner) is an electronic device for reading printed barcodes. It consists of a light source, a lens and a light sensor translating optical impulses into electrical ones.
Questions tagged [barcode-scanner]
2511 questions
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Using WebUSB API to read data from a barcode scanner
I'm trying to use WebUSB API to read data from a usb barcode device.
(Specifically I use a Datalogic QuickScan Lite qw2100. And I have configured the scanner to use the USB-COM-STD Interface.)
Using the code below I can actually read data from the…
Ivar
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4 answers
Javascript: Hidden Input Barcode Scanner
Here's my current setup:
I have a barcode scanner in keyboard mode. I am trying to scan to a hidden and out of focus input.
The barcode I am trying to read is as follows: asterisk [barcode-info] asterisk.
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QT HID Barcode reader different keystrokes inside textinput then Keys.onPressed
So in summary, I have a barcode reader MC3300 (not relevant) where I have my barcode reading app, and some characters it reads not as they are inside the barcode, its these:
ascii 41 it reads as 32
ascii 62 it reads as 48
ascii 30 it reads as…
Jiri Zaloudek
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Barcode Detection preprocessing
I am working on a project for barcode detection in python.
I have received an accuracy of 85% in my dataset and i want to improve it. i am using pyzbar for barcode detection.
first my barcode is decoded in raw stage if not found it is…
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Laser Scanning Solution for Xamarin forms
Objective
I've looked at multiple libraries such as ZXing, however, all of them allow a Xamarin Forms application to scan via Camera, I am looking for a laser scanning solution and have yet to find one. Can anyone recommend one?
Additional…
CorrieJanse
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BarCode to get data from database
export default function BarCode() {
const [hasPermission, setHasPermission] = useState(null);
const [scanned, setScanned] = useState(false);
const [data, setData] = useState();
const [value, setValue] = useState();
updateSearch = (data)…
user13132748
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Link encoded in QR code - is there a way to encode so that the result will be the same regardless to the OS current language?
I encoded a link in a QR code and the problem is that the link has the caracter ":" and the phisical key from the keyboard that has ":" is not the same in all languages.
So if I change the language from the windows OS the scanned code will be…
Victorqedu
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Can ZXing can read multiple barcode in the single image using C#?
I am trying to read multiple barcodes in a jpg image using the ZXing library. But it's returning only one barcode. I am not getting any source on how I can modify my code so that it read multiple barcodes. My code is:
private string…
Piyush
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xcode avfoundation barcode sanner how to return type of scanned code
Xcode 12 / Swift 5
AVfoundation
I followed this tutorial for barcode scanner http://www.wepstech.com/bar-qr-code-ios-with-swift-5/
func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection:…
Jintor
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How to recognize a barcode format
I'm using Laravel and https://github.com/milon/barcode to generate barcodes.
From an API I got string but not the format.
How to recognize which format is because if I put the wrong format, my function which generates PDF fail.
Is there any PHP to…
Aleks Per
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Xcode Swift 5 scanning barcodes with AVfoundation, how to pause and add a button to resume scan without stopping or closing the view
I'm following this tutorial http://www.wepstech.com/bar-qr-code-ios-with-swift-5/
to add a QRcode / Bar Code Scanner.
The view starts with the camera capture, when it detects it print to console
func found(code: String) {
print(code)
…
Jintor
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Sending Control Commands to USB Barcode Reader
We are integrating a new barcode reader (Newland NLS-FM430) in one of our products and we need to control its functionality. We have already implemented this behavior with another reader but it was an RS232 version, so we were able to send commands…
Vladimir
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Methods to identify possible barcode symbology from stored text string?
Question:
Is there a method [1] or best practice(s) to identify what barcode symbologies are valid for a specific piece of data, after the scanning occurs?
~ (without having access to images or hardware; only a single string or database field is…
Jim Grisham
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the Barcode Scanner from googles mlkit doesn't recognize any barcodes
So i followed googles tutorial for their barcode scanner (this one) and the qr scanning works like a charm. The only problem is that i don't need qr codes but rather bar codes. But they don't work. It doesn't detect anything. I tried multiple online…
mr.jogurt
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How can I read an 11 digit UPC code on iOS without the device adding an extra digit?
I have written a simple barcode app using VNBarcodeObservation in iOS... it works perfectly fine on 12 and 13 digit UPCs. However, when I scan an older Star Wars toy with 11 digits in the UPC, it adds a 12th digit to the UPC. For example, the code…
Zachary Fisher
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