Queuing in the security check point is unproductive and not an enjoying moment. "SITA figures indicate that an extra 10 minutes spent at security may reduce retail spend by as much as 30%" quoted from https://www.sita.aero/air-transport-it-review/articles/go-with-the-flow---best-practice-passenger-flow-management.
What it does
The internet of things will detect long queue then alert the relevant authorities to do some action such as open more gates.
How I built it
OpenCV will detect the pattern if there is long queue.
Challenges I ran into
Not enough time to finish developing it for this hackathon.