Ihame rya tekinoroji ya touch foil ni iyateganijwe kuri capacitive ecran, igizwe nibice bibiri bya firime ibonerana, gride matrix layer igizwe numurongo wibyuma uzenguruka amashoka ya X na Y, buri matrise ikora igice cyunvikana gishobora kumva gukoraho kwamaboko yumuntu , gukoraho foil nuburyo bushya bwonyine bushobora kugera kumurongo, gukorera mu mucyo, kutirinda amazi, kurwanya umwanda, kwivanga kurwanya urumuri, kutagira ikariso no gukoraho hejuru yikirahure.