As Vermont lawmakers debate a bill that would legalize sports betting in the state, they are focusing on what it would take to regulate the companies that operate betting platforms and provide users with the resources needed to address problem gambling.

The bill, H.127, would allow two to six companies to operate a mobile sports betting platform in Vermont under the supervision of the state’s Department of Liquor and Lottery, according to the latest draft of the legislation. Sports betting — as well as participation in fantasy sports — would be restricted to people ages 21 and older.

In recent years, sports betting apps like DraftKings and FanDuel have boomed in popularity.