I am working on a class diagram that visuales the location of all staff and assets via a RFID tag (advanced barcode) which are checked via the wi-fi network access points. My question is would these access points be considered classes?
They could be. The question to ask is whether the access points are relevant in this particular domain. For example, will any of the entities in your class diagram need to know about access points? What information do you gain from including access points? What will be its relationship with other entities?