Abstract: A glass block, and method for making a glass block, having one or more formed slots on one or more edge faces of the block. The slots are formed during the molten state of the glass formation to maintain the mechanical integrity of the glass structure in architectural applications. The glass block may have an insert placed inside by way of the formed slot, the insert having performance and/or decorative properties.

Abstract: An RFID tag includes a substrate having a top surface and a bottom surface. An RFID integrated circuit is disposed on the top surface of the substrate. A first electrically conductive region is associated with the top surface of the substrate and electrically coupled to the RFID integrated circuit. A second electrically conductive region is associated with the bottom surface of the substrate and electrically coupled to the first conductive region, the first and second conductive regions forming an RFID antenna. The RFID integrated circuit, first conductive region and second conductive region together provide an RFID function. An attachment layer is associated with the bottom surface of the substrate for attaching the tag to a surface. An adhesion modifying layer modifies the adhesion of the second conductive region such that the second conductive region is disrupted if the tag is tampered or removed from the surface.