it is possible to stop printer it before starting to print and.....

[lnd]

it is possible to stop printer before it starting to print and ask the user password and If the code is correct then it will continue to print and if not it delete the current print job.

[iganrous]

Apology, I need help when printing fill-out forms printed (invoices) through a dot matrix printer, as I can make it?
Attentively THANKS