A thin layer of cloth or a thin sheet of nonmetallic material will not typically interfere with SonoSim LiveScan® tag performance. However, any nonmetallic material thicker than two millimeters may substantially diminish tag performance. Any metallic material covering the tags will disable the tags. Avoid applying any direct sudden force over the tags (e.g., hitting, hammering, etc.) as this will damage the delicate hardware within the tags.