penetrate the target material and be reflected in part by a second surface for the purpose of ascertaining if the cavity between said first target surface and said second target surface contains a quantity of united states currency application_number US 67822100 A description turning now descriptively to the drawings in which similar reference characters denote similar elements throughout the drawing figures fig1 through fig8 illustrate the internet accessible computer based licensed broker auctioneer management system of the present invention indicated generally by the numeral 10 referring to fig1 the user 12 of the multi sensor device 10 is establishing a signature waveform for a wall 30 by generating an electromagnetic wave 14 18 using one of the presets or a user generated electromagnetic wave as the user will be continuously moving around the room and the distance from the surface being scanned will be continuously changing the first returning wave 20 will be used as a marker or origin point of the structure being scanned the second returning wave 16 which has penetrated the wall will have the first wave 20 time subtracted which will provide a time differential herein referred to as the signature wave once the signature wave has been determined the rest of the wall 30 can be scanned referring to fig2 the multi sensor device 10 is being used to scan a wall 30 surface the time differential of the selected frequency is compared to the signature wave form if an aberration is detected the user can determine the size of the aberration by continuing to scan the area.