Nooca isha iftiinka alaabtu wuxuu isticmaalaa 650nm laser cas, meel yar, feejignaan dhalaalaya, tamar xoog leh ma fududa in la faafiyo, waxay si sax ah u ogaan kartaa walxaha mugdiga ah ee ka sarreeya o3mm, iyo barta dhalaalaysa, fududahay in la isku hagaajiyo gudbiyaha iyo qaataha, cillad ku habboon