There are three degrees of MAC consciousness in devices. The highest of these corresponds to a "self-beaconing device", which is able to perform beaconing on its own. The following degree represents "directed-beaconing devices", which are unaware of MAC frames and have limited beaconing capabilities, depending on the host to detect and beacon for nearby devices. Lastly there are "non-beaconing devices", which have a very limited ability to transmit and receive; on the other hand, devices which are undetectable by the host can not be affected by these devices, nor can affect them.