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Internet Message Format  |  1993-01-24  |  1.3 KB
  1. Path: sparky!uunet!olivea!charnel!rat!zeus!dcampbel
  2. From: dcampbel@zeus.calpoly.edu (Duncan Campbell)
  3. Newsgroups: comp.sys.hp48
  4. Subject: Re:  HPs at exams, IR range
  5. Message-ID: <1993Jan25.001939.178057@zeus.calpoly.edu>
  6. Date: 25 Jan 93 00:19:39 GMT
  7. Sender: Duncan Campbell dcampbel@oboe.calpoly.edu
  8. Organization: California Polytechnic State University, San Luis Obispo
  9. Lines: 16
  10.  
  11. Regarding using the HP48 to send the answers to exam questions from
  12. student to student, I seem to recall something published about this
  13. before.  The result was that HP agreed to tint the plastic through
  14. which the IR passes a bit darker, restricting the range.  If you take
  15. the door covering the expansion ports off, you should be able to
  16. defeat the range restriction a bit without having to design radio
  17. transmitters, etc.  I also know of teachers who will perform a 
  18. memory clear on any HP found in a test room.  Anyway, I hope this
  19. answers any relevent questions with reasonably accurate info.  
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  27.