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But it's not like it's a new problem. I mean printers make something physical happen in the real world and they aren't exactly new, and last time I checked I didn't have to use sudo to print a document on Linux.

I am not sure one should need root privileges to burn a CD either.

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It is, however, smart to put resource limits on a shared printer so that no one user can cause it to burn through reams at a time. And even as expensive as ink is, the ingredients of a sandwich are more expensive than the ink and paper needed to print a typical document.

Additionally, we've been seeing more and more viruses attacking SCADA systems (most notably Stuxnet), which show that people have not been taking the security issues of robotics seriously enough.

There have been fun pieces of malware for printers too. People who do not learn from history....

In fact there was an old virus that infected C64 disk drives..... These are still not new problems.

In the traditional Unix network environment, printing and billing is a famously hard problem.

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