a plurality of cameras observe a space and provide real - time video signals . a local server receives the signals and generates virtual video signals for transmission over the internet to remote users &# 39 ; devices . each remote user is provided with an interface for virtual navigation within the space . upon receiving a remote user &# 39 ; s navigation command , the local server adjusts the virtual video signal to show what the user would see if the user were actually moving within the space . the virtual video signal is produced for each user , so that the users can virtually navigate independently .