Heraldry is in use everywhere in the SCA, from brightly colored pennons & banners flying in the breeze, to tabards and painted shields borne by fighters on the field. A SCA heraldic device is essentially a personal “logo.” On a banner, it lets everyone know you’re at the event. On a shield, it identifies who the fighter on the field is.  On a tabard or tunic, it tells who is wearing the clothing. Local SCA groups also have heraldic officers they can help you design your own unique device and name by which you will be known, and then register them with the SCA College of Arms.