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In 1993 I was the principal inventor of a text based learning and testing system using an options list or multiple choice questions wherein the actual answers to questions and/or their value were hidden (encrypted) in barcodes printed in a workbook or test paper.  Thus the scanning device could provide immediate feedback during learning and/or accumulated a test score as the student or candidate worked through the paper.  This allowed a student to be corrected and directed or their result to be known immediately a candidate completed a test; so that no special scanner or external/additional marking was required.

The system was used by a number of large organisations including Qantas, the Department of Defence, BHP and the University of Newcastle for testing up to 100 candidates at a time, before it became economically viable to give each candidate their own computer.  Barcodes were automatically generated by accompanying software I wrote that seamlessly merged them into the text of the authors' questionnaire or study booklets.  I also designed a custom 3of9 barcode font to facilitate this process.

Leon Dearden and I developed a barcode reader that decrypted and thus instantly scored the selected barcodes as they were chosen from a list, or multiple choice options, as scanned by a candidate/student.  Leon designed the prototype circuit for manufacture and programmed the firmware while I provided the program meta-instructions.  It was called SmartPen.  Each pen unit was networked back through a network controller to a single portable computer and printer.

The system was entirely catholic as to the actual test/work book being scored. The result was entirely determined by the work book or test and the student/candidates' responses.  It was theoretically possible that everyone in the room was simultaneously completing an entirely different test or lesson.

Test candidates were often given a printout of their result as they left the examination room.   In the case of abilities testing, that was designed by the University of Newcastle to test the aptitudes of candidates for apprenticeships, this printout provided a full abilities analysis against normalised results.

The invention reached the application stage to protect the IP and allow its public use but I decided not to proceed to a full patent as low cost computers were becoming available and a major investment was required to refine and further miniaturise the barcode reader for mass production and to redesign the networking solution.

I subsequently redesigned the reader software to work with any PC and any hand-held barcode scanner; making  the SmartPen device redundant.  But it is now very much a solution in search of a problem.

Follow this link to see the patent application and detailed description.


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Travel

Southern France

Touring in the South of France

September 2014

 

Lyon

Off the plane we are welcomed by a warm Autumn day in the south of France.  Fragrant and green.

Lyon is the first step on our short stay in Southern France, touring in leisurely hops by car, down the Rhône valley from Lyon to Avignon and then to Aix and Nice with various stops along the way.

Months earlier I’d booked a car from Lyon Airport to be dropped off at Nice Airport.  I’d tried booking town centre to town centre but there was nothing available.

This meant I got to drive an unfamiliar car, with no gearstick or ignition switch and various other novel idiosyncrasies, ‘straight off the plane’.  But I managed to work it out and we got to see the countryside between the airport and the city and quite a bit of the outer suburbs at our own pace.  Fortunately we had ‘Madam Butterfly’ with us (more of her later) else we could never have reached our hotel through the maze of one way streets.

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Fiction, Recollections & News

Electricity Shocks

 

 

 

I've always thought that would be a good headline. 

Now that I have your attention I have to report that Emily McKie, my daughter, is the author of a new e-book on Smart Grid technology in her sustainable cities series.

 

 

 

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Opinions and Philosophy

The Carbon Tax

  2 July 2012

 

 

I’ve been following the debate on the Carbon Tax on this site since it began (try putting 'carbon' into the search box).

Now the tax is in place and soon its impact on our economy will become apparent.

There are two technical aims:

    1. to reduce the energy intensiveness of Australian businesses and households;
    2. to encourage the introduction of technology that is less carbon intensive.
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