A first method for facilitating personal contacts among a plurality of subscribers to a location-based person contact service provided by a service provider; a second method for communicating information to a user of a wireless device by a server; and a third method for real-time monitoring of vital signs of a living being. In the first method, personal profiles are transmitted to subscribers. In the second method, a message specific to both an establishment and the user is transmitted to a wireless device or smart display proximal to the user in the establishment. In the third method, information relating to a violated vital sign parameter determined from the monitoring is communicated to a local communication node.