Why it was needed
01The workflow had too many steps to feel fragmented, so form selection, customer data, signing, and approval had to stay connected.
Field e-document workflow app
UBcare E-Document
An Android business app that carries document drafting, customer lookup, signing, verification, and approval in the field.
EnterpriseAndroidE-Signature
Enterprise / Android
Android workflow app for e-documents, signatures, verification, and approval.
Project overview
The first requirement was a field document flow that stayed connected from login to signature and approval.
UBcare E-Document is an Android workflow app for creating electronic documents, looking up customers, collecting signatures, running verification, and continuing into approval. The main job is to keep the full document flow connected in the field.
The implemented scope includes a multi-module Android app with document lists, customer tabs, OZ viewing, CameraX capture, webview verification, and signature and attachment flows. It is a B2B field tool built around document-heavy operations.
What I built first
02I structured a Kotlin Android app with document lists, customer tabs, OZ viewing, CameraX capture, and webview-based verification.
Where this approach works well
03This fits B2B field apps and partner-operation tools where paperwork and approval flows are dense.
Technical details
Tech stack
Android client
KotlinAndroidXViewBindingDataBindingGradle product flavors
Document and network layer
RetrofitOkHttpGsonCameraXsecurity-cryptoFileProvider
External systems
UBcare APIFirebase Realtime DatabaseOZ Report ViewerDMS / WebView auth
Services and tools
csamapi.ubcare.co.krcsam.ubcare.co.krFirebase Realtime DatabaseOZ Report ViewerCameraXEncrypted local cache
Product surfaces
Selected screens
The screens below are the actual interfaces that defined the product experience.
Contact
If you are considering a similar product, feel free to reach out.
A short brief, a reference link, or the current problem definition is enough. I can help structure the right first version from there.