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Conference noted::hackers_v1

Title:	-={ H A C K E R S }=-
Notice:	Write locked - see NOTED::HACKERS
Moderator:	DIEHRD::MORRIS

Created:	Thu Feb 20 1986
Last Modified:	Mon Aug 03 1992
Last Successful Update:	Fri Jun 06 1997
Number of topics:	680
Total number of notes:	5456

461.0. "Gauranteed printing" by NCCSB::BRILEY () Tue May 05 1987 12:36

    I have a customer who wants to write an application to print checks.
    The problem is that he wants to know if the check was actually printed
    or not.  That is, the checks are numbered and the application actually
    successfully completed printing, and that the printer actually printed
    the check.  Anybody got any ideas.
    
    Thanks,
    Rob

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461.1 Simple matter of programming MAY20::MINOW I need a vacation Tue May 05 1987 13:29 12

T.R	Title	User	Personal Name	Date	Lines
461.1	Simple matter of programming	MAY20::MINOW	I need a vacation	`Tue May 05 1987 13:29`	12
	Have the customer print an OCR readable status code (including a one-way hashed encryption of the check number and amount). Then, as a separate processing step, have the output checks read by a verification program. This should be reasonably safe against loss and casual thievery. (A clever thief with access to a computer and OCR printer could still create fake checks that would pass the verification step.) Many years ago, one of our customers attached a micro-switch to a teletype to check for paper jamming. This is probably not a suitable solution for your customer, however. Martin.

Have the customer print an OCR readable status code (including a one-way
hashed encryption of the check number and amount).  Then, as a separate
processing step, have the output checks read by a verification program.
This should be reasonably safe against loss and casual thievery.  (A
clever thief with access to a computer and OCR printer could still
create fake checks that would pass the verification step.)

Many years ago, one of our customers attached a micro-switch to a
teletype to check for paper jamming.  This is probably not a
suitable solution for your customer, however.

Martin.