You can sign up for an account at a few places in Vegas to gain access to mobile betting. William Hill and CG Technologies are the main ones on or near the Las Vegas Strip but Stations and Coast Casinos also offer this service. You can sign up for either at any of the sports books locations:

CG Technologies: Cosmopolitan, Tropicana, Venetian, Hard Rock, Palazzo, MResort, Silverton, Palms

William Hill: Hooters, Tuscany, Ellis Island, Westin, Riviera, Silver Sevens, The D, Golden Gate, Binions, Elcortez, Plaza, Downtown Grand, Four Queens. full list of William Hill sports books

Some might say that mobile betting takes the thrill out of betting but as You can see from the vine video below, there are times that the thrill is gone. special events like the super bowl can cause the betting lines to go out the door.