Build shape
B2B field e-document app
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
Product brief
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.
Scope
Problem
Problem
The workflow had too many steps to feel fragmented, so form selection, customer data, signing, and approval had to stay connected.
Implementation
I structured a Kotlin Android app with document lists, customer tabs, OZ viewing, CameraX capture, and webview-based verification.
Best fit
This fits B2B field apps and partner-operation tools where paperwork and approval flows are dense.
Technical structure
Product evidence
Primary stack
Android Native · Kotlin · AndroidX
Data & sync
Encrypted cache · UBcare API · OZ Viewer
Operational surface
Auto-login · Passcode · CameraX · WebView auth
Stack
Android client
KotlinAndroidXViewBindingDataBindingGradle product flavors
Document and network layer
RetrofitOkHttpGsonCameraXsecurity-cryptoFileProvider
External systems
UBcare APIFirebase Realtime DatabaseOZ Report ViewerDMS / WebView auth
Integrations
csamapi.ubcare.co.krcsam.ubcare.co.krFirebase Realtime DatabaseOZ Report ViewerCameraXEncrypted local cache
Screens
Product evidence
App
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