DESCRIZIONE
In one embodiment, a method includes receiving information about a proximity of a plurality of users located within a covered enclosure, the information comprising one or more images or one or more sounds of at least a portion of the proximity, the information having been obtained from the proximity by a plurality client computing devices of the users automatically and without manual user input and with one or more sensors of each client computing device; identifying each user within the proximity based at least in part on the information; and determining a position of each user within the covered enclosure based at least in part on the information.