TOKYO, May 30 (Reuters) - Apple ( AAPL ) CEO Tim Cook

agreed at the request of Japanese Prime Minister Fumio Kishida

to put Japan's "My Number" identification card functions onto

iPhones, Japan's top government spokesperson said on Thursday.

The Japanese government plans to integrate people's tax

and social security data into a single identification card to

boost administrative efficiency.

The comment from Chief Cabinet Secretary Yoshimasa

Hayashi comes after Kishida's video conference earlier in the

day with Cook.

"Prime Minister Kishida and Mr. Tim Cook confirmed that

My Number card functions will be put on iPhones next spring,"

Hayashi told a regular news conference.