12challenges • 171 implied HN points • 17 Dec 25
- MARCOS is a simple crowdsourced system and web tool that maps which train carriage door corresponds to which station exit so you know exactly where to stand.
- If the data is made free and global it could save commuters small amounts of time every day and make stations easier to navigate for parents, elderly people, and busy travelers.
- The project is currently empty and needs help — people can star the GitHub, add stations via pull requests, and share it widely, but the effort is meant to be a Secret Santa surprise for Marcos.