▁also ▁ ▁Ant wan , ▁given ▁name ▁Ant w uan , ▁given ▁name ▁ ▁Notes ▁ ▁Category : A fr ican - American ▁given ▁names <0x0A> </s> ▁, ▁literally ▁" W al let ▁Mobile ", ▁is ▁the ▁de ▁fact o ▁standard ▁mobile ▁payment ▁system ▁in ▁Japan . ▁O sa if u - Ke it ai ▁services ▁include ▁electronic ▁money , ▁identity ▁card , ▁loyal ty ▁card , ▁fare ▁collection ▁of ▁public ▁trans its ▁( including ▁rail ways , ▁bus es , ▁and ▁air plan es ), ▁or ▁credit ▁card . ▁The ▁term ▁" O sa if u - Ke it ai " ▁itself ▁is ▁a ▁registered ▁tra dem ark ▁of ▁N TT ▁Do como . ▁ ▁The ▁system ▁was ▁developed ▁by ▁N TT ▁Do como ▁but ▁the ▁system ▁is ▁also ▁supported ▁by ▁other ▁mobile ▁phone ▁operators . ▁ ▁It ▁uses ▁Sony ' s ▁Mobile ▁F eli Ca ▁IC s . ▁ ▁Oper ators ▁N TT ▁do como ▁Group : ▁i - mode ▁F eli Ca ▁K D DI ▁( au / Ok ina wa ▁Cell ular ): ▁E Z ▁F eli Ca ▁So ft B ank ▁Mobile : ▁S ! ▁F eli Ca ▁Will com : ▁W ILL COM ▁IC ▁Service ▁ ▁Adv antages ▁F eli Ca , ▁developed ▁by ▁Sony , ▁is ▁the ▁de ▁fact o ▁standard ▁technology ▁used ▁for ▁Japanese ▁smart ▁cards . ▁Many ▁of ▁these ▁cards ▁accept ▁O sa if u - Ke it ai ▁( Mobile ▁F eli Ca ) ▁system ▁as ▁well , ▁or ▁plan ▁to ▁accept ▁it