ok...i tried them both...the green audioprism cd stoplight pen...it worked...and no...i had no problems...i was always able to color between the lines so i didn't get any where the laser was supposed to go.
the black "sharpie" pens...you know...the indelible laundry markers...well...that one didn't do jack for me.
the black "sharpie" pens...you know...the indelible laundry markers...well...that one didn't do jack for me.