Boston — Massachusetts gambling regulators say they're encouraged by early numbers from a unique gambling addiction prevention effort being tested at the state's first casino.

The Massachusetts Gaming Commission said Friday the "Play My Way" program at Plainridge Park Casino has signed up 3,216 people since its June launch.

Commission spokeswoman Elaine Driscoll says that's about 7.4 percent of all regular gamblers visiting the Plainville slots parlor and harness racing track in the last two months. She says Cambridge Health Alliance is also evaluating the pilot program's effectiveness.

"Play My Way" is billed as the first of its kind in the U.S. Casino reward cardholders can set spending limits and they're sent automatic notifications as they approach them.

Similar systems have been tried out in Australia, Canada, Norway, Sweden and elsewhere.