The fact that we all have to register at VSL even to purchase means that there is a way to recover lost licenses, or simply do away with the dongles through UUID -machine IDs we all use to download, install, and update our software and libraries. An internet connection is need to do all o this networking any, so it doesn't make sense in late 2016 to rely on dongles when you can have monthly (or semi-monthly) internet pings to make sure we're all behaving. And I'm looking at you as well, Avid and Waves. And I am a respoonsible adult who does not pirate software.
Even having licenses sit on a locked SD card is better than these black-boxes by Steinberg and iLok. The only reason iLok has ZDT is because:
1. It's something else to sell.
2. They know their product doesn't last more than a few years.
You see, this is all money that I could be saving to buy more VSL products. But certain policies and the unwillingness of others, to step into the 21st Century give me pause. I certainly don't want to single-out VSL, because their products are so well engineered, that I've never really needed any real customer support.
FCPX, Compressor, Motion, Logic X, and Photoshop CS6 do not require dongle- licensers.
Avid, Slate Digital, VI Labs, and many others do, which is probably only necessary because of they way the code is written. I don't know. Perhaps others will join-in and shed some light on this.