Kunezinhlobo eziningi zezibani ezixwayisa umlilo, phakathi kwazo umtshina wentuthu wesithombe, lapho intuthu yomlilo ivikela i-laser, i-electrode iphelelwa amandla futhi ithumele isignali ye-alamu. Isibani sesexwayiso somlilo sizokhanyisa ngokubomvu kanye ne-strobe ukwazisa abantu ukuthi kuqubuke umlilo futhi kufanele babaleke.