Both Poser 11 and Poser 12 require Internet access. Not 24/7, but the software "phones home" every once in awhile, and if it can't make contact, it will eventually stop working.

This was originally added by SmithMicro, and Bondware is keeping that "feature."

I believe if you contact support, they can extend the period between check-ins, but unlike in the SmithMicro days, there's no way to disable the phone home thing permanently.