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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

More Silk Road Adventures - The Caucasus

 

 

 

Having, in several trips, followed the Silk Road from Xian and Urumqi in China across Tajikistan and Uzbekistan our next visit had to be to the Caucuses.  So in May 2019 we purchased an organised tour to Azerbaijan, Georgia and Armenia from ExPat Explore.  If this is all that interests you you might want to skip straight to Azerbaijan. Click here...

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Fiction, Recollections & News

Stace and Hall family histories

 

The following family history relates to my daughter Emily and her mother Brenda.  It was compiled by my niece Sara Stace, Emily’s first cousin, from family records that were principally collected by Corinne Stace, their Grandmother, but with many contributions from family members.  I have posted it here to ensure that all this work is not lost in some bottom draw.  This has been vindicated by a large number of interested readers worldwide.

The copyright for this article, including images, resides with Sara Stace. 

Thus in respect of this article only, the copyright statement on this website should be read substituting the words 'Sarah Stace' for the words 'website owner'.

Sara made the original document as a PDF and due to the conversion process some formatting differs from the original.  Further, some of the originally posted content has been withdrawn,  modified or corrected following requests and comments by family members.  

 

Richard

 

 


 

Stace and Hall family histories

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Opinions and Philosophy

Electric Cars revisited

 

 

  

In 2005 I calculated that in Australia, due to our use of coal to generate electricity, electric cars had a higher carbon footprint than conventional cars. 

There's been a lot of water under the bridge since then and now (April 2019) many are promoting electric cars as environmentally friendly, so I thought it was worth a revisit. 

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