Pornography and public computers in libraries have gone hand-in-hand for some time and I'm doing some research on how library policies should handle addressing this in a realistic and proactive way. The question that I am researching is whether or not it is legal to explicitly list pornography as something that cannot be accessed on library computers.
Because libraries are guardians of the first amendment, and because there is no consistent definition of “pornography,” the answer is: NO. I cannot offer legal guidance that simply bans porn…any more than I could suggest that a public library start charging admission. Such guidance would cut into the fundamental heart of a library’s mission.