Brian Morrison writes:
Richard Kettlewell wrote:
Brian Morrison writes:
Grunff wrote:
Brian Morrison wrote:

I suspect that it will involve some sort of Java applet that will
only print what it is allowed to, the browser's direct printing
ability will have to be suspended for this to work.

What on earth would be the point?

To endure that printing the stamp is done from within the Java sandbox
so that only one print attempt per bar-code can be made.

Never heard of photocopiers? Scanners? Screenshot buttons?

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http://www.greenend.org.uk/rjk/