Ephemeral interaction system

A system comprising:

• a processor;
• a memory device holding an instruction set executable on the processor to cause the computer system to perform operations comprising:
• determining that a first member and a second member of an online social networking service physically interacted at an interaction location at an interaction time by determining that the first member and the second member are listed on a check-in status message posted to an online social networking service;
• calculating a specific time interval commencing at the interaction time;
• displaying to the first member, during the specific time interval, via a user interface, an ephemeral prompt indicating that the first member physically interacted with the second member, and inviting the first member to message the second member via the online social networking service;
• and
• preventing the ephemeral prompt from being displayed subsequent to expiration of the specific time interval.

A non-transitory machine-readable storage medium comprising instructions that, when executed by one or more processors of a machine, cause the machine to perform operations comprising:

• determining that a first member and a second member of an online social networking service physically interacted at an interaction location at an interaction time by determining that the first member and second member are listed together on an electronic calendar invitation associated with a meeting location and meeting time consistent with the interaction location and interaction time;
• calculating a specific time interval commencing at the interaction time;
• displaying to the first member, during the specific time interval, via a user interface, an ephemeral prompt indicating that the first member physically interacted with the second member, and inviting the first member to message the second member via the online social networking service;
• and
• preventing the ephemeral prompt from being displayed subsequent to expiration of the specific time interval.