
icash is a prepaid card issued by 7-11 in Taiwan, sort of like pocket money used for micro-payment mainly in 7-11. It has a point accumulation system and benefits like cash rebate to promote spending.
icash has reached an important milestone this year after launching a co-branded "iu card" (icash悠遊卡). Important in the sense as this contactless card is not only limited to 7-11s, but it can be used for public transportations and selected stores like Starbucks, Sogo, Muji etc.
However, you cannot use icash to pay online yet, with the exception of their own online store - 7net. Obviously, this is the missing puzzle and something for President Chain Store Corp to work on.