500wpm for a few seconds to type in a single massively practised sentence. Big discussion from a couple of months ago: https://news.ycombinator.com/item?id=29827461

Is this for real?

To me, it looks way too error prone (3D movement per key... wat) and english only.

I honestly wondered whether it was a stunt from Cards Against Humanity or The Onion.

But if not, you got me curious.

They need to check marketing copy. "500% less keystrokes" is mathematically impossible. "80% less keystrokes" is.