Turkish Developer Launches Free Vehicle Service History Tool Requiring No Customer Account

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A Turkish full-stack developer named Akın Coşkun has built Arac Saglik Karnesi, a free digital vehicle service-history platform designed for auto repair shops in Turkey. Each vehicle is assigned an 8-character code that customers can enter on a webpage to view their full maintenance history without creating an account or password. The multi-tenant system uses tenant-scoped database queries to ensure that data from different shops remains strictly isolated, preventing cross-tenant data leaks. Shop owners access an authenticated dashboard to log service visits, manage staff, and upload before-and-after photos, which are compressed in the browser before uploading to reduce storage costs. The tool is live on Vercel at no monthly cost and is built using Next.js, React 19, PostgreSQL on Neon, and Auth.js v5, with its source code publicly available on GitHub.

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