That's easy...they dont!
A rangefinder simply measures the linear distance between the user and whatever target they select (tree, flagpole, etc). A golfers height is not involved into the calculation.
Certain rangefinders have a "slope" feature...which is a built-in inclinometer that provides a compensated distance based upon the degree of incline or decline. This means when you are aiming at target that's uphill or downhill, the rangefinder (with slope feature) will adjust the yardage reading for the angle and distance.
So all things being equal, the 5'10" golfer will get the exact same reading as the 6'4" golfer.
They measure to the point you place them to, they don't rely on a consistent pin height.
Golf laser rangefinders are used by amateur and professional golf players alike. Many different retailers like Modell's and Sports Authority sell golf laser rangefinders. Going on their website and clicking on the item will give you reviews.
The brand Golf Buddy has a bunch of different models of GPS rangefinders which have great reviews online and come in a wide variety of prices. This brand also has great reviews online.
Anybody of any height may play miniature golf.
The height of the 2012 Volkswagen Golf is 4 ft. 10.3 in. (58.3 in.).
The height of the 2006 Volkswagen Golf is 4 ft. 8.7 in. (56.7 in.).
The height of the 2005 Volkswagen Golf is 4 ft. 8.7 in. (56.7 in.).
The height of the 2013 Volkswagen Golf is 4 ft. 10.2 in. (58.2 in.).
The height of the 2004 Volkswagen Golf is 4 ft. 8.7 in. (56.7 in.).
The height of the 2002 Volkswagen Golf is 4 ft. 8.7 in. (56.7 in.).
The height of the 2011 Volkswagen Golf is 4 ft. 10.3 in. (58.3 in.).
The height of the 2001 Volkswagen Golf is 4 ft. 8.9 in. (56.9 in.).