Tags & Patches are generally used to identify objects or locations, but can also be used for a second RFID technology depending on the access control environment. They come with a high-performance 3M-type adhesive, but some models have a perforation in the centre so they can be screwed to a support, wall or object. CAUTION. To avoid loss of performance or reading problems, avoid placing them on a metal surface. As an option, we can offer an anti-ferrite model to avoid possible interference.