Thanks for your infor. I need to buy child prepaid ic card .
IC cards can generally be used all over Japan. The only restriction is that you cannot *return* the IC card (to get cashback) anywhere, you can only return it in places where you can buy it. For example, PASMO and SUICA can only be bought in the greater Tokyo area, so you can not return it in Osaka. But it can be used all over Japan.