Sisitemu ya Karita yo Kwinjira muri Metero Jinaga ni sisitemu yo kwinjira muri metero idakoresha guhuza intoki yakozwe ku bagenzi bafite ubumuga n'abagenzi bageze mu za bukuru. Iyi sisitemu igizwe n'agakoresho gato ko ku rufunguzo, kambarwa nk'urunigi mu ijosi, hamwe n'igice gishyirwa ku irembo ry'amatike. Irembo rikinguka mu buryo bwikora igihe umugenzi utwaye ako gakoresho anyuze, bityo gukoza ikarita ntibiba ngombwa. Kumenyekana bikoresha ibimenyetso by'umuvuduko muke n'iby'umuraba wa radiyo, mu buryo busa n'urufunguzo rw'ubwenge rw'imodoka, ibi bikaba bigabanya amakosa yo gusoma. Igice gishobora gushyirwaho kizamura irembo risanzwe ry'amatike rikaba irembo ry'ubwenge ryo kwinjira, kandi amakuru y'umugenzi yoherezwa ku biro bya sitasiyo.

Izina ry'umushinga : Jinaga, Izina ryabashushanya : Junsoo Choi, Izina ry'abakiriya : Garin Co. Ltd..