SPRINGFIELD, Mass. (WWLP) – Millions of smartphones transformed into on-demand sports books Friday, as mobile sports gambling went live across the state.

Several digital sports books took their first action in Massachusetts Friday, opening up to millions of new players.

“This is a big day for us. A huge amount of work to get here but ultimately its a great day for us our guests and the state of Massachusetts. We are thrilled to be at this moment,” said MGM Springfield President Chris Kelley.

Each sports book requires some basic information to verify your identity, including your government name, phone number, address, birthday and the last four of your social security number. If you’re having trouble, there’s help at MGM Springfield all weekend.

“Our bet MGM Heroes. They are here to help out with just about everything. Mostly the app, if people come in with questions, how do I sign up, how do I deposit money, how does the app work… they are here to do that,” said Robert Westerfield, Vice President of Casino Operations.

A few tips to prevent problematic sports betting. Have a budget and stick to it. When you lose, and you will, don’t make more bets to try and get the money back, just take the loss. Also, only ever wager money that you are totally comfortable losing.

If you think you or someone you know has a gambling problem, dial the state’s hotline at 1-800-327-5050, visit the website, or walk into MGM Springfield and find the Game Sense booth.

The Attorney General’s office penned a nine-page letter of concerns to the state gaming commission and offered testimony at their meeting on Thursday. The state also has a hotline you can call 24-7, specialists are always available and can walk you through how to access the resources that will best help you.