A plurality of repeater devices may utilize extreme high frequency (EHF) interface to detect and/or track entities that may be located within the plurality of repeater devices. Each of the plurality of repeater devices may transmit EHF signals that may enable identification of the transmitting repeater device. Identification of the transmitting repeater devise may comprise use of unique information and/or transmission parameters. Each of the plurality of repeater devices may determine characteristics of received EHF signals to enable determining presence and/or location of entities within the plurality of repeater devices. These characteristics may comprise identity of transmitting repeater devices, signal power, signal amplitude, delay of signal, and/or reception angle. Non-extremely high frequency (non-EHF) connections may be utilized within the plurality of repeater devices to coordinate and/or update detection and/or tracking of entities within the plurality of repeater devices.