Wanted to add my support for this as well. Just bought a Surface Pro 4, and Windows Hello works incredibly well with the camera. Really would love to see this support in LastPass.
Initially I was going to get the TypeCover that had the finger print reader so I could use with LastPass, but they were out of stock when I ordered my SP4 (and I'd rather have the teal keyboard than the charcoal anyway).
But after using Windows Hello, its a MUCH better solution for me. Reason is that most of the time when I'm in my office (or even away), I have the SP4 with the keyboard cover folded behind it, so I can write with the pen in OneNote. Thus, even if I had the fingerprint scanner on the keyboard, I couldn't use it.
With the camera and Windows Hello, no matter how the screen on the SP4 is positioned, it can see me and log me in. This will help to further one of Last Pass's goals (in my opinion) of making login to multiple locations both very secure as well as convenient.
Please add support for Windows Hello and the camera a high priority for LastPass! That would truly make it awesome.