Prepaid printing service in school

Ott Maaten ott.maaten at gmail.com
Mon Aug 23 03:29:22 PDT 2010


Scenario:

1. Student log in
2. According to the username the system polls the ID-code (necessary in Estonia) from the central database
3. According to the username the system polls the credit information from the central database
4. When user hits print button the job is sent to spooler (on hold) and the script counts page numbers and checks whether the person has enough credit.
5. If credit is OK the job is released to printer and information is sent to central database.

We have solution for points 1 2 3 and 5 but 4 is missing
Can anyone help how to proceed?





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