>>Wrong. HASP or USB Keys or "dongle" still provide one of the strongest forms of software copy-protection. See for example
>>
>>http://www.aladdin.com/hasp/dongles.aspx
>
>And they are pretty much universally hated by users and system administrators/ support staff. They become even more hated when the port or other connection they require is no longer available on the customers' hardware (think parallel port dongles).

I don’t know the general feelings about USB keys in the population at large or amongst system administrators in specific. For general software aimed at end-users I agree this would not be a good solution simply because you don’t want multiple keys hanging around, being plugged in/out or chained together. That would be a hindrance. But for a developer, to enforce one copy of the development environment per developer, this is a total non-issue.