Ukusika amashubhu ensimbi yendabuko kusetshenziselwa isaha ukusika. Ukusuka kumanuwali kuye ku-semi-automatic futhi kuya ku-othomathikhi ngokugcwele, isu lokusika ishubhu lifinyelele "kusilingi oluphakeme kakhulu" futhi lahlangabezana ne-bottleneck. Ngenhlanhla, indlela yokusika ishubhu ye-laser yethulwa embonini yamashubhu futhi ifaneleka kakhulu ukusika izinhlobo ezahlukene zamashubhu ensimbi.