Computerized methods and systems obtain information associated with a first device attempting to connect with a second device that has a MAC address having an LAP and UAP. A transceiver is tuned to a frequency band at least covering a first channel represented in one or more candidate channel sequences, and receives a first packet transmitted by the first device. One or more second channels that each immediately follow the first channel in a corresponding one of the one or more candidate channel sequences are identified. The transceiver is tuned to a frequency band at least covering one of the second channels, and receives a second packet transmitted by the first device. A controller/processor processes the received second packet to determine whether the second packet is a valid packet. If the packet is a valid packet, the controller/processor extracts information from the second packet.