System for determining network membership

A device comprising:

• one or more processors;
• and
• memory configured to store computer instructions that, when executed by the one or more processors, cause the device to perform actions comprising:
• receiving, from one or more terminals at a first location, a plurality of interactive messages during a predetermined time period, wherein each interactive message comprises personally identifiable information of a user;
• determining, based on the plurality of interactive messages, a plurality of users associated with the plurality of interactive messages;
• storing a first record that indicates interactive messages were received from the plurality of users in close temporal proximity to each other at the first location;
• determining a second record that indicates interactive messages were received from a subset of the plurality of users in close temporal proximity to each other at a second location;
• assigning, to each of the first record and the second record, a respective weight;
• sending, to at least one user in the subset and based on the weight assigned to the first record being lower than the weight assigned to the second record, a request to confirm users in the subset are members of a network;
• receiving a reply to the request, wherein the reply confirms that users in the subset are members of the network;
• maintaining a list of members of the network;
• adding, based on the reply and to the list, the subset;
• receiving a second request to authenticate an interaction between a first user and a second user;
• determining, based on the list, that both the first user and the second user are members of the network;
• and
• approving, based on the determining that both the first user and the second user are members of the network, the second request.

A non-transitory computer readable medium storing computer instruction that, when executed by one or more processors, cause performance of actions comprising:

• receiving, from one or more terminals at a first location, a plurality of interactive messages during a predetermined time period, wherein each interactive message comprises personally identifiable information of a user;
• determining, based on the plurality of interactive messages, a plurality of users associated with the plurality of interactive messages;
• storing a first record that indicates interactive messages were received from the plurality of users in close temporal proximity to each other at the first location;
• determining a second record that indicates interactive messages were received from a subset of the plurality of users in close temporal proximity to each other at a second location;
• assigning, to each of the first record and the second record, a respective weight;
• sending, to at least one user in the subset and based on the weight assigned to the first record being lower than the weight assigned to the second record, a first message to confirm users in the subset are members of a network;
• receiving a reply to the first message, wherein the reply confirms that users in the subset are members of the network;
• receiving, from a mobile device associated with a member of the network, a request of a content item;
• sending, to one or more of the other members of the network, the content item;
• adding, to a membership list, the subset;
• receiving a second request to authenticate an interaction between a first user and a second user;
• determining, based on the membership list, that both the first user and the second user are members of the network;
• and
• approving, based on the determining that both the first user and the second user are members of the network, the second request.