I'm a Bev tech, there's two companies that make bar guns, tapright and multiplex aka wunderbar. There's more options for fountain dispensing but most of my work is bars and restaurants.
It was the first gen ones that could do it, they dropped support pretty quickly though since I'm pretty sure most models lack the ability even with mods to save a few bucks.
Why can't we go back to meeting people on BBS and forums. Shit I met my partner in 2009 on a forum. It was organic and real, no apps, no algorithms just good ol' fashion php with a dash of flame war.
This must of been very tedious to make... Aww fuck whoops