From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,7bb6fcf19a817eb0 X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news3.google.com!news.glorb.com!news-in.ntli.net!newsrout1-win.ntli.net!newspeer1-win.ntli.net!news-out.ntli.net!newsrout1-gui.ntli.net!ntli.net!news.highwinds-media.com!pe1.news.blueyonder.co.uk!blueyonder!fe1.news.blueyonder.co.uk.POSTED!53ab2750!not-for-mail From: "Nick Roberts" Subject: Re: tasking design for keylock Newsgroups: comp.lang.ada References: <1141389368.420323.184550@v46g2000cwv.googlegroups.com> Content-Type: text/plain; format=flowed; delsp=yes; charset=iso-8859-1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-ID: User-Agent: Opera M2/8.52 (Win32, build 7721) Date: Sun, 05 Mar 2006 19:27:09 GMT NNTP-Posting-Host: 82.43.35.196 X-Trace: fe1.news.blueyonder.co.uk 1141586829 82.43.35.196 (Sun, 05 Mar 2006 19:27:09 GMT) NNTP-Posting-Date: Sun, 05 Mar 2006 19:27:09 GMT Xref: g2news1.google.com comp.lang.ada:3273 Date: 2006-03-05T19:27:09+00:00 List-Id: On Fri, 03 Mar 2006 20:48:52 -0000, Simon Wright 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