There is disclosed a data transfer system that uses a TDM serial multiple format and supporting method that is capable of multiplexing and de-multiplexing a number of asynchronous and arbitrarily framed component serial data streams. The local oscillators are frequency synthesizers based on an external frequency reference. Embodiments cause the user persona to be embedded at preset positions, or in preset formats, or both, depending on the configuration, position, or motion of the user’s body.