Unable to implement PIN release printing in CUPS #1451
Description
We are trying to implement PIN release printing in CUPS for iOS devices.
We have added the following to the bottom of our PPD file, as per the documentation.
*cupsMandatory: "job-password job-password-encryption"
*cupsJobPassword: "1111"
Our printer is visible from iOS devices and the print options sheet shows "This printer requires a PIN to print" as expected.
However, when we tap "Print" to submit the print job, no PIN is ever presented to the user via the expected iOS PIN dialog (screenshot below).
I can see from the error_log that a job password is being generated and passed along to the filters.
Maybe this issue is on the iOS side, not CUPS. I'm sorry to report it as a bug. But we have found scant guidance or implementation examples for PIN printing in our research thus far.