Ukugrumba nge-laser, kusetyenziswa ukunyibilikisa nokususa ipeyinti kwiindawo ezithile zomaleko ophezulu. Nje ukuba ipeyinti isusiwe, izibane zangasemva ziya kukhanyisa ikhiphedi kuloo ndawo.

Kubalulekile ukuqaphela ukuba iikeypad zerabha zesilicone zihlala zikrolwa nge-laser ukuphucula imiphumo yokukhanyisa emva. Nangona kunjalo, ukukrolwa nge-laser kusebenza kuphela, ukuba ikeypad zerabha yesilicone inokukhanyisa emva. Ngaphandle kokukhanyisa emva, indawo okanye iindawo ezikrolwe nge-laser aziyi kukhanyiswa. Ayizizo zonke iikeypad zerabha zesilicone ezinezibane zangasemva ezikrolwa nge-laser, kodwa zonke okanye uninzi lweekeypad zerabha zesilicone ezinezibane zangasemva zinezibane zangasemva.