On 23.07.2012 07:11, Brian L. Matthews wrote:
On 7/22/12 8:43 PM, Prakash Ranganthan wrote:
Hi friends i tried blocking keyboard input but it also blocks barcode
input any idea how to proceed with blocking only keyboard input in
textbox and allowing barcode input.
The barcode readers I've used just generate keystrokes, so as far as
the browser's concerned, it's all keystrokes. However, the keystrokes
from the reader usually come quickly and consistently, so maybe you
could measure the time between keystrokes and differentiate that way.
Why would you want to block the keyboard though? Not only is the
mechanism of sending the digits the same (emulating keyboard), they
keyboard also serves as an alternative when a barcode cannot be read by
the scanner.
--
Klaus Johannes Rusch
[email protected]
http://klausrusch.atmedia.net/
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