A proposal that residents be required to give their My Number before entering a casino could severely restrict access, the leader of a ruling party panel working on plans for the Singapore-style resorts said in an interview.

Identification cards with chips that contain data including the ID numbers should be a requirement for entry, an expert panel working with bureaucrats on proposals for regulation of the "integrated resorts" said last month. This would be a stricter requirement than in the U.S., where Social Security is required only when collecting winnings over a certain limit. Foreign tourists in Japan are to be allowed to use passports as ID, the panel said last month.

"It's important to make sure access doesn't become extremely restricted," LDP panel head Takeshi Iwaya said Monday, when asked about using the My Number data for identifying gamblers. "These will be leisure and entertainment facilities, so they must be friendly to customers and we mustn't go too far" with attempts to prevent wrongdoing. He suggested passports and driver's licenses as alternative forms of ID.