 1. Safety in a clinical setting in terms of minimal adverse events over the course of the trial; 2. Cosmetic results during the healing process and cosmetic outcome; 3.Effects of 1, 2, 3 or 4 treatments in terms of clearance and cosmetic outcome for each treated wart; 4.Subject impressions immediately following application of pulses; 5.Subject satisfaction with the treatment and cosmetic outcome during and following the healing process; 6 Device performance and clinical feedback under actual clinical conditions and to gather information on design features that may be modified to optimize the device. 