Nintendo has announced that they will be releasing Pokémon branded Nintendo Pre-Paid eShop cards in Japan. They come in two price ranges: 1000yen and 2000yen. The 1000yen card features Black Kyurem and White Kyurem on the card while the 2000yen card features Pikachu and monster balls. The 1000yen card will be released on June 23, 2012 and sold at Pokémon Centers and Toys R Us locations in Japan. The 2000yen card will be released on July 14, 2012. The pre-paid cards will allow players that cannot use a credit card to purchase the required eShop points online to be able to purchase the upcoming titles
Pokémon AR Searcher (ポケモンARサーチャー) and Pokémon National Zukan Pro (ポケモン全国図鑑Pro) by unlocking the required eShop points using the pre-paid cards instead as the cards can be purchased at retailers without a credit card.
Source:
http://www.pokemon.co.jp/info/2012/06/120608_g01.html