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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

The United Kingdom

 

 

 

On the surface London seems quite like Australia.  Walking about the streets; buying meals; travelling on public transport; staying in hotels; watching TV; going to a play; visiting friends; shopping; going to the movies in London seems mundane compared to travel to most other countries.  Signs are in English; most people speak a version of our language, depending on their region of origin. Electricity is the same and we drive on the same side or the street.  

But look as you might, nowhere in Australia is really like London.

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Fiction, Recollections & News

My car owning philosophies

 

 

I have owned well over a dozen cars and driven a lot more, in numerous countries. 

It seems to me that there are a limited number of reasons to own a car:

  1. As a tool of business where time is critical and tools of trade need to be carried about in a dedicated vehicle.
  2. Convenient, fast, comfortable, transport particularly to difficult to get to places not easily accessible by public transport or cabs or in unpleasant weather conditions, when cabs may be hard to get.
  3. Like clothes, a car can help define you to others and perhaps to yourself, as an extension of your personality.
  4. A car can make a statement about one's success in life.
  5. A car can be a work of art, something re-created as an aesthetic project.
  6. A car is essential equipment in the sport of driving.
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Opinions and Philosophy

Australia's carbon tax

 

 

Well, the Gillard government has done it; they have announced the long awaited price on carbon.  But this time it's not the highly compromised CPRS previously announced by Kevin Rudd.  

Accusations of lying and broken promises aside, the problem of using a tax rather than the earlier proposed cap-and-trade mechanism is devising a means by which the revenue raised will be returned to stimulate investment in new non-carbon based energy. 

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