Ibiro biremereye nibikoresho byabugenewe bidasanzwe, birangwa nigitereko gikomeye kandi kiremereye. Ikozwe mubirahuri byujuje ubuziranenge, ubu bwoko bwibikoresho byibirahure byateguwe neza muburyo bwo hasi, byongera uburemere bwinyongera kandi biha abakoresha uburambe bwabakoresha buhamye. Kugaragara kwikirahure kiremereye kirasobanutse kandi kiragaragara, byerekana ibyiyumvo bisobanutse byikirahure cyiza cyane, bigatuma ibara ryibinyobwa riba ryiza.