I'm building a information contact panel that will serve as a point of communication between employees and their company. Part of this process involves putting an ID card to the panel, so it can be 'read' by an RFID reader inside the panel. I'm planning to use anodised aluminium for the front panel, with the rest of the enclosure made from treated wood and plastic.
From what I understand, Aluminium blocks radio frequencies (although this has been debated for certain specific situations). I'm using a cheap/standard RFID reader (RC522). Would cutting a small grill of 1mm or 2mm holes into the aluminium above the reader allow the RFID signal through to be read by the reader? Am also interested in other suggestions/thoughts too. Thanks in advance.