If approved, the measure folded into a larger gambling-regulation bill would allow keno players to bet using their mobile phones, with an app linked to their bank accounts. Nebraska has allowed the game for decades, but the keno industry and city officials are worried they’ll lose revenue after voters approved a constitutional amendment last year to legalize casino gambling, a flashier alternative with more ways to bet. Keno is a lottery-like game where players pick numbers on a sheet of paper and submit them to a keno operator, usually a bartender or parlor employee.