A method for limiting control of a cargo handling system to a preselected number of portable electronic devices, comprising: receiving, by a controller of a wireless access point, a system control request from a portable electronic device; determining, by the controller, a number of portable electronic devices currently controlling the cargo handling system; sending, by the controller, at least one of a unique control key or a control request denied message to the portable electronic device, wherein the controller is configured to send the unique control key to the portable electronic device if the number of portable electronic devices currently controlling the cargo handling system is fewer than a threshold number of allowed portable electronic devices, and wherein the controller is configured to send the control request denied message to the portable electronic device if the number of portable electronic devices currently controlling the cargo handling system is greater than or equal to the threshold number of allowed portable electronic devices; receiving, by the controller, a control command including an identification key from the portable electronic device; comparing, by the controller, the identification key to the first control key; and sending, by the controller, at least one of the control command or a bad key message in response to the comparison of the identification key to the unique control key, wherein the controller is configured to send the control command to a component of the cargo handling system if the identification key matches the unique control key, and wherein the controller is configured to send the bad key message to the portable electronic device if the identification key is different from the unique control key; wherein the wireless access point is in operable communication, via wired or wireless connection, with at least one of one or more power drive units or one or more other cargo handling system components that convey cargo, wherein the wireless access point is configured to allow portable electronic devices to interface with and control the cargo handling system, and wherein the portable electronic device is configured to wirelessly communicate with the wireless access point such that signals may be sent wirelessly between portable electronic device and the wireless access point. receiving, by a controller of a wireless access point, a system control request from a portable electronic device; determining, by the controller, a number of portable electronic devices currently controlling the cargo handling system; sending, by the controller, at least one of a unique control key or a control request denied message to the portable electronic device, wherein the controller is configured to send the unique control key to the portable electronic device if the number of portable electronic devices currently controlling the cargo handling system is fewer than a threshold number of allowed portable electronic devices, and wherein the controller is configured to send the control request denied message to the portable electronic device if the number of portable electronic devices currently controlling the cargo handling system is greater than or equal to the threshold number of allowed portable electronic devices; receiving, by the controller, a control command including an identification key from the portable electronic device; comparing, by the controller, the identification key to the first control key; and sending, by the controller, at least one of the control command or a bad key message in response to the comparison of the identification key to the unique control key, wherein the controller is configured to send the control command to a component of the cargo handling system if the identification key matches the unique control key, and wherein the controller is configured to send the bad key message to the portable electronic device if the identification key is different from the unique control key; wherein the wireless access point is in operable communication, via wired or wireless connection, with at least one of one or more power drive units or one or more other cargo handling system components that convey cargo, wherein the wireless access point is configured to allow portable electronic devices to interface with and control the cargo handling system, and wherein the portable electronic device is configured to wirelessly communicate with the wireless access point such that signals may be sent wirelessly between portable electronic device and the wireless access point.