Interesting article on ABS brakes for light trailers

Interesting concept, but I'm having a bit of trouble understanding how it works. Article claims each braked trailer wheel is actuated/controlled separately- made me think we're talking about a whole new braking system.

But looking at the product page at this link all I see are brake controllers, so evidently this is supposed to work on any ordinary trailer brakes. Just how that translates into "ABS" on the trailer is a puzzle to me-?