A question, which copy protection do other libraries tipycally use?
Spectrasonics uses a challenge/response system. Works great - but "taking it with you" is essentially impossible, unless on a laptop.
Native Instruments has their own challenge/response system -- administered by thier proprietary "service center" application. Works fine UNTIL something goes wrong with the application, and you can't auth or de-auth until you solve the issue. I was unable to use NI products for more than a week once.
Synthogy (Ivory ) uses iLok
Most Avid (formerly Digidesign) products and 3rd parties that are designed for protools, use iLok.
Mach5 uses iLok
Part of what put Gigastudio out of business was the defection of most soundware developers because Giga failed to support copy protection. Remember, VSL launched in Giga format, and if Giga had adequate protection, do you suppose VSL would have stayed with them?
PS -- take the VSL key off of your keychain and treat it as the valuable item that it is. And don't plug directly into your laptop. You are asking for trouble.