Abstract: The disclosed implementations generally provide a user access to a secure network resource (e.g., a website, chat application). In some implementations, access to a secure network resource is provided by a communication terminal in communication with a secure access service. The communication terminal detects a presence of a unique identifier (e.g., a Bluetooth MAC address stored in a mobile device), and passes the unique identifier and cryptographic information (e.g., a key code or digital certificate) to the secure access service. The secure access service validates the integrity of the unique identifier and authenticates the user of the device by reading the cryptographic information (e.g., reading the certificate).

Abstract: A database of family, friends and professional network relationships are established through the exchange of unique identifiers between paired mobile devices using wireless technology. The paired mobile devices exchange information related to the users' identities. The mobile device users can independently upload the exchanged information through one or more access points to an online service. The online service uses the uploaded information to create online resources for the users.