Open, lightweight logistics for anyone

I built Vantaj to help humanitarian organisations like Convoy4Ukraine catalogue and track medical aid travelling from the UK to Ukraine. A car or a sealed box with a QR code sticker tells anyone who scans it exactly what's inside, plus rough location history – without opening it, without an account, and without installing an app.

How it works

1. 1
   Generate a sheet of unique QR codes and print them as stickers. An optional batch tag identifies your organisation and makes whole consignments searchable at once.
2. 2
   Stick a code on a box or in the window of a vehicle. Snap it with any phone to record the contents – a short description and optional photo.
3. 3
   Anyone can snap the same code again, anywhere in the world, to see what's inside, either from the Vantaj app or a native camera.

Every scan adds an approximate location to the record, derived from the device's IP address. No GPS, no location sharing. For aid convoys with multiple stages, this can create a simple chain of custody: logged in Cambridge, checked at the Polish border, handed over to partners in Kyiv, and finally delivered to recipients in Zaporizhzhia.

Vantaj also works for home storage, self-storage, and moving house. Or for more playful uses, like following this book as it's passed between strangers and travels the world.

The app is free while in beta. Use it at your own risk: I'll do my best to keep it running but this is a personal project and I can't guarantee uptime or data retention.