Abstract: The invention provides an online meeting controller operable to connect devices having installed an online meeting application which is operable to present a user interface for the device. The user interface of each device is operable to display data from the other device so as to allow users at each device to participate in an online meeting. The controller is operable to communicate with a relationship manager which is operable to identify a user of a device as a host for an online meeting and identify a user of a device as the participant to be invited to the online meeting by the host The controller is also operable to receive first validation data which validates a device as a host device for an online meeting to be operated by a host of the meeting and second validation data which validates a device as a participant device to be operated by a participant invited to the online meeting.