It's a very very rudimentary way of doing it. Cheaper, low end eq mounts do this. I think iOptron offers it still on some of their lower end stuff. The low end stuff is mean for wide field astrophotography, like Milky Way photos as opposed to stuff like nebula photos, and milky way photography is done w wide-angle lenses so half assed accurate polar alignment, like what you'd get w a laser is accurate enough for something like milky way photography with a 35mm lens. You won't be shooting 2 minute exposures w a laser aligned eq mount, but you certainly can do 20-30 second exposures w a wide angle lens, on a horribly aligned scope before you get star trailing.

Laser is integrated into eq mount. Point laser at North Star. Once aligned, you use a ball mount to get the camera on whatever you're looking at, then once aligned the head just rotates at the same speed the earth turns.

It really is just pointing the laser at the North Star as best you can.