For Wiegand activation, only a single card needs to be purchased as this will allow you to toggle the Wiegand functionality at the reader. Please note: Activation of Wiegand will result in only HID™ Wiegand tokens being read. As there is no defined Wiegand format for Hitag2 (Paxton) and EM tokens, we are unable to apply the logical rules needed for these tokens to be read. With HID™ Wiegand enabled, Hitag2 (Paxton) tokens and EM tokens will no longer be read by the reader.