Online sport betting, also referred to as sport booking, is the practice of placing bets on sporting events. Historically, bets were made on sporting events based upon the outcomes of the event. ufa24 has made it difficult to place bets online or in-person on sports events, however Nevada does have an exception. To place a bet, one had to visit an operator of betting. Sports booking apps permit people to place bets using their mobile devices and make payments. These apps also function as a digital clearinghouse that can receive bet calls as well as pay outs.