One of the other examples I worked on to detect copyright was
Cursor at less than 12 and a current unused Function key
pressed Followed by some time later cursor after a specific
position and another unused at the time Function key. The
program displayed an image computed image for 2 seconds
reset the flags and continued on.

As I recall it was a total of about 25 bytes of Z80 code
to implement it scattered in three places throughout the
application

Crist=F3v=E3o Dalla Costa wrote:

> On 11/16/06, Walter Banks <walter@bytecraft.com> wrote:
> >
> > My personal favourite was an box that had door opening detection
> > that made the unit apparently fail until 24 hours after the box was
> > closed. This was part of a anticlone measure. The most interesting
> > door open detections is using an led as a light sensor.
> >
> > w..
> >
> >
>
> That's a good one. Might use in the future.
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