Sounds like you have a good standard to use then. If you pick a font that requires a check digit, and dont provide a check digit, then the scanner's firmware will flag that read as invalid. That's what the check digit's for - to stop invalid reads getting into the system at source. it's the check digit concept that's allowed things like barcode reading in automated baggage handling equipment at the airport to identify bags whizzing past on a conveyer, and the rapid reading at the supermarket.
Anyway, if you arent using a font that requires a check digit, you're ok at least so far. You'll just need to make sure your procedures require whoever scans the barcode checks that the number it's collected is a valid number in the database. You'll need a big popup in the screen saying "INVALID NUMBER TRY AGAIN" or something to handle the possibility that the scanner reads the barcode wrong. 3of9 is one of the earliest barcodes and the simplest. There isnt any algorithm behind the numbering - there's just a set of thick and thin bars representing each of the ten numbers and that's about it. As time went on and applications got more complex and automated, more and more checking came into barcoding, but a simple 3of9 sounds about all you need, I think. Cheers Mike Kear Windsor, NSW, Australia Adobe Certified Advanced ColdFusion Developer AFP Webworks http://afpwebworks.com ColdFusion, PHP, ASP, ASP.NET hosting from AUD$15/month On Thu, Jan 28, 2010 at 9:29 PM, Taco Fleur <[email protected]> wrote: > That's a good question. I guess I don't really care, just setting up a > membership system for our gym that's opening soon. I used 39 I think it is, > printed it and scanned it, it worked. I feel a bit lost not knowing the ins > and outs but it works... > -- You received this message because you are subscribed to the Google Groups "cfaussie" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/cfaussie?hl=en.
