From: "Nick Roberts" <nick.roberts@acm.org>
Subject: Re: tasking design for keylock
Date: Sun, 05 Mar 2006 19:27:09 GMT
Date: 2006-03-05T19:27:09+00:00 [thread overview]
Message-ID: <op.s5ygaiaap4pfvb@bram-2> (raw)
In-Reply-To: m2bqwn6yq3.fsf@grendel.local
On Fri, 03 Mar 2006 20:48:52 -0000, Simon Wright <simon@pushface.org>
wrote:
You probably already know this but:
(a) sound a raspberry (a single low long note) whenever the user makes a
mistake;
(b) the sound (a short bleep) for each keypress must be the same;
(c) sound a rising two or three-note group to indicate success.
Points (a) and (c) are to give the user feedback. Point (b) is so that an
interloper cannot tell what combination is being pressed just by
listening. The raspberry, should always follow the 0.5 second timeout, and
there should only be one kind of raspberry sound for any mistake, so that
the combination cannot be progressively guessed.
--
Nick Roberts
http://www.nicholasjroberts.co.uk
prev parent reply other threads:[~2006-03-05 19:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-03 12:36 tasking design for keylock Rolf
2006-03-03 13:04 ` Jean-Pierre Rosen
2006-03-03 17:55 ` Dmitry A. Kazakov
2006-03-03 20:48 ` Simon Wright
2006-03-05 19:27 ` Nick Roberts [this message]
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