I need an Android app that lets me film a commercial train wagon and, in real time, capture its key data. While the camera is rolling, the app should log the wagon’s details, pull any identification numbers or labels it detects, and give me a quick way to note its visible condition and maintenance status. Think of the smooth, guided workflow used in QCR-style inspections—tap to confirm, swipe to move on—only tuned for rolling stock. As soon as I finish recording, a neatly laid-out A4 PDF must be produced automatically. One wagon per page, with a frame grab of the video, the captured fields already filled, and space left for handwritten or typed comments. The PDF has to save locally and be shareable through the Android share sheet, ready to print without scaling issues. I am happy for you to rely on Android Studio, Kotlin or Java, CameraX, ML Kit OCR or OpenCV—whatever delivers reliable scanning and a clean, responsive UI. Accuracy and speed come before flashy graphics. Deliverables • Release-ready APK • Complete Android Studio source project • A4 PDF template and code that fills it dynamically • Brief setup/user guide Acceptance criteria • At least 90 % successful extraction of all three data groups during a daylight test run of 20 wagons • PDF prints edge-to-edge on A4 with no distortion Timeline: the full package in my hands within one month of contract start.