barcode

I'm writing some attendance software. Each member will have an ID card with a barcode which they will use to sign in to events. How long should the barcode field be in my database? I'd like to accept Code 39 and Code 128 barcodes. I know these are variable length codes, so what should I set the max length to? Thanks! EDIT: My clients will be using a variety of third-party barcode printing tools. Code 128 can do 128 ASCII characters so set the max length to 128 (or higher, it doesn't really matter). Let me clarify that last statement. Variable text fields will use 1 byte per character (or more

This question already has answers here : Closed 7 years ago . Possible Duplicate: Is there a barcode recognition framework for iOS? I've done some iPhone programming (safely midlevel) and now a requirement has come up for us to write a barcode reader that uses the iPhone camera. This is not for shopping or the general public but will be for internal use. My first thought was to simply programatically take a picture, upload it to server, and have a web service or something similar handle the heavy lifting of extracting the numbers out of the bar code. However I recently installed some apps

Problem: rendering barcodes in CodeIgniter via Zend library barcode. I googled, and also tried all tutorials on first 2 pages. I stackoverflowed and found quiet a few topics on my problem, even few are marked as answered but no luck. Finally I tried this https://stackoverflow.com/a/15480779/1564365 but yet another error message. error: Fatal error: Class 'Zend\Barcode\ObjectPluginManager' not found that means it is actually loading Barcode library but with error. sidenote : ZF 2.2 fresh download (today), CI 2.1.3 fresh download (today) To solve this, I am forced to use ZF1. step by step:

I am trying to write a program that can will read a barcode scanner. In addition, I need it to read the input even when the application is not the window in focus (i.e., running in system tray, etc). I found this article, titled Distinguishing Barcode Scanners from the Keyboard in WinForms , that seems to solve the exact problem. It is working pretty good, it detects my device and handles the WM_INPUT message. However, it is checking to see if the RAWINPUT.keyboard.Message is WM_KEYDOWN (0x100). It never seems to receive this. The only line of code I've altered in the code provided in the

Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I know this has been discussed a few times on stackoverflow but I wasn't able to find a sufficient answer. For a project, I am seeking the best possible piece of software/api/library that can recognise barcode numbers from the input image. It will be used on mobile phones(iphone, windows mobile, android etc.) so it should be good at catching barcodes from bad angles, blurry images and such bad

My first application I have developed in RoR is for some Kiosk Touchscreen PCs used in our stock. When the stock worker picked up some material he enters the quantity in a Form. Now I want to print a label containing: customer name, material description, quantity, and a barcode on our Zebra printer. How would I do that from a Ruby on Rails Application ? Sending directly the control chars needed for ZPL (Zebra Printer Language) from the controller ? ( not very comfortable ) Create a view in HTML send it to the client, and the client has to print it. ( not very confortable and error prone, as

I would like to use barcode scanner in my Laravel application. This is an online Point of Sale Application. I know that barcode scanner returns just a string and press Enter Button. But to capture this string I need to use a form and select the input field as well. If I dont select the input field it cann't capture the data. What I want is to work the barcode scanner without selecting the form. Is it possible anyway ? Yes, there are two ways: The autofocus attribute <input id="barcodeInput" type="text" autofocus> You can use the autofocus attribute, but this may not be supported by any browser