Edy is a prepaid rechargeable contactless smart card by Sony's FeliCa technology. With the firmware 1.50 PS3 can use Edy cards or an electronic wallet in a cellphone via a USB contactless IC card reader/writer "PaSoRi" (approx. $30) for payments in Japanese PS Store, in addition to credit cards. Other updates for the 1.50 firmware are not much interesting, a new sound option for the menu, removal of backup data, WEP128/WPA-PSK/WPA-PSK(AES) support, choice for how to save password/sign-in, Korean keyboard, and backward compat updates.
http://www.jp.playstation.com/info/release/nr_20070123_ps3_150.html
http://www.watch.impress.co.jp/av/docs/20070123/sce.htm
http://www.jp.playstation.com/info/release/nr_20070123_ps3_150.html
http://www.watch.impress.co.jp/av/docs/20070123/sce.htm