1001 Freelance Projects
Latest Projects from Freelance Marketplaces
Today is: 12-Dec-2025 14:58 GMT
View Project
View this project in detail (Note: you will be redirected to external marketplace)
Project title: Android Kiosk App for SUNMI K2
Posted by: External project from PeoplePerHour
Started: 03-Oct-2025 10:14 GMT
Description: Overview

Build a locked-down Android kiosk app for the SUNMI K2 (24", 1080×1920 portrait).
The app will pull content from our WooCommerce /kiosk endpoint, cache it for offline-first operation, and expose native capabilities—printer, QR/camera, USB vending controller—to the web UI via a secure JS bridge.
Payments are handled via Revolut Terminal API (semi-integrated): app initiates transactions, terminal performs PCI-scoped card flow, app receives results.

Deliverables

Production-ready APK/AAB + full source code (Git repo).

JS bridge documentation + sample /kiosk bundle.

Config guide (WooCommerce endpoints/keys, Revolut Terminal setup, supported USB VID/PIDs).

Simple USB vending serial protocol spec + (nice-to-have) bench simulator.

Test plan/results (unit, instrumented, hardware-in-the-loop) and admin cheat sheet.

Scope & Requirements

Content & Offline

Fetch /kiosk HTML/JSON/assets from WooCommerce; verify signatures; local cache.

Start from cache; background delta updates (WorkManager).

Render via WebView (file://) with a minimal, audited JS↔Native bridge.

Payments — Revolut Terminal (semi-integrated)

App sends {amount, currency, orderId} to Revolut Terminal API/device.

Handle async result (approved/declined/cancelled), update UI, print receipt, update WooCommerce order.

Idempotent flow with retries; refund/void via PIN-protected admin.

Peripherals

Printer: SUNMI SDK / ESC/POS (receipts, admin prints).

QR/Barcode: CameraX + ZXing/ML Kit; expose decoded payload to WebView.

Vending: USB CDC/serial to control up to 12 slots; commands, timeouts, retries, job queue.

(Optional) NFC: Read ISO14443/NDEF tokens for loyalty/account lookup.

Kiosk & Resilience

LockTask (pinned app), immersive full-screen, auto-start on boot.

Watchdog to recover WebView/service on crash/hang.

Branded offline page and graceful error states.

Security/Privacy

TLS + cert pinning to our APIs; signed content manifests.

Admin menu with PIN; logs export with PII redaction; GDPR-aware.

Telemetry

Local event queue → batch upload (crashes, payment outcomes, dispense results, playback metrics).

Acceptance Criteria (must pass)

Boots straight into kiosk; recovers from kill/reboot in ~5s; no system chrome.

Offline-first after initial sync.

Full flow: Revolut card payment → vending dispense → receipt print → WooCommerce order update.

100 consecutive purchase cycles without ANR/crash on SUNMI K2.

Signed bundle verification enforced; admin features behind PIN.

Tech Preferences

Kotlin + Jetpack (ViewModel, WorkManager, Room).

Android WebView with shouldInterceptRequest asset interception; addJavascriptInterface for a minimal bridge.

CameraX + ZXing/ML Kit; SUNMI SDK for printer/scanner where applicable.

USB Host (CDC/FTDI), OkHttp3 with TLS pinning, Hilt DI.

Crash/metrics (Crashlytics/Sentry); ProGuard/R8.

What We Provide

WooCommerce /kiosk endpoint + adverts and signing keys.

Revolut merchant sandbox credentials and terminal.

Test hardware access or remote test windows.

API contracts and sample UI bundles.

Experience Needed

Android kiosk/terminal apps in production.

Revolut Terminal or similar semi-integrated card workflows.

USB serial on Android + ESC/POS printing.

WooCommerce/REST integrations.

Nice-to-Haves

Prior SUNMI K2 integrations.

Hardware-in-the-loop testing experience.

Content signing/manifest verification patterns.

Screening Questions (answer briefly)

Outline your semi-integrated Revolut Terminal flow (init → async status → idempotent order update → receipt).

How will you design a safe JS↔Native bridge so WebView stays sandboxed but can print/scan/dispense/pay?

Your retry/timeout strategy for DISPENSE and payment callbacks.

How do you keep kiosk mode after crashes/reboots and ensure quick recovery?

Your approach to content signing and preventing activation of tampered bundles.

Budget & Timeline

Fixed-price: £____ (please propose)

Timeline: ____ weeks (milestones welcome)

Legal

NDA and IP assignment required.

Must provide code in a private Git repo throughout the project.
Project ID: 3452185
Project category:
Project budget:
View this project in detail (Note: you will be redirected to external marketplace)
Last Projects / Browse Projects
  Project Started
Colorful Homepage Redesign
Category: Graphic Design, HTML, UI / User Interface, User Experience Research, User Interface / IA, Web Design, Web Development
Budget: ₹1500 - ₹12500 INR
12-Dec-2025
11:04 GMT
Unity C[sharp] Smooth Object Rotation Script
Category: C#, Programming, Game Development, Unity
Budget: $10 - $30 USD
12-Dec-2025
11:02 GMT
Finalize WordPress Site Functionality
Category: CSS, Debugging, HTML, Payment Gateway Integration, PHP, Website Testing, WordPress, WordPress Plugin
Budget: $15 - $25 USD
12-Dec-2025
11:02 GMT
Logo Design - Tirumala Gold Buyers
Category: Adobe Illustrator, Photoshop, Branding, Graphic Design, Illustration, Logo Design, Typography, Vector Design, Visual Arts
Budget: ₹600 - ₹1500 INR
12-Dec-2025
11:01 GMT
Penjelasan Konsep Sederhana
Category: Academic Writing, Article Writing, Content Writing, Copywriting, Editing, Proofreading, Research Writing, Technical Writing
Budget: $10 - $30 USD
12-Dec-2025
11:01 GMT
Basic Photo & Video Edits - 12/12/2025 05:48 EST
Category: Adobe Lightroom, Adobe Premiere Pro, After Effects, Photo Editing, Photoshop, Video Editing, Video Production
Budget: ₹12500 - ₹37500 INR
12-Dec-2025
11:01 GMT
Resolve Slow WooCommerce Checkout Bug
Category: HTML, MySQL, Performance Tuning, PHP, Web Design, Web Development, Website Optimization, WordPress
Budget: ₹600 - ₹1500 INR
12-Dec-2025
10:59 GMT
Apply Artwork to Box Template
Category: Adobe Illustrator, Adobe InDesign, Photoshop, Graphic Design, Illustration, Packaging Design, Print Design
Budget: $10 - $30 USD
12-Dec-2025
10:58 GMT
Centralized License Inventory System
Category: API Development, Database Management, Docker, HTML, Inventory Management, Joomla, Laravel, MySQL, PHP, RESTful
Budget: $1500 - $3000 USD
12-Dec-2025
10:57 GMT
Cirrhosis Dataset SPSS Analysis & Presentation
Category: Data Analysis, Data Management, Data Visualization, Excel, SPSS Statistics, Statistical Analysis, Statistics
Budget: €30 - €250 EUR
12-Dec-2025
10:57 GMT
Redacción Completa de TFG
Category: Academic Research, Academic Writing, Content Development, Content Writing, Data Analysis, Editing, Proofreading, Report Writing, Research, Technical Writing
Budget: €250 - €750 EUR
12-Dec-2025
10:56 GMT
Maithili Language ProofReading
Category: Content Writing, Language Tutoring, Microsoft Word, Proofreading, Technical Writing, Translation
Budget: $2 - $8 USD
12-Dec-2025
10:55 GMT
Marketing Data Analysis Dashboard
Category: Data Analysis, Google Sheets
Budget: $2 - $8 USD
12-Dec-2025
10:54 GMT
Full Screenplay: A Life Between Cultures
Category: Book Writing, Creative Writing, Fiction, Ghostwriting, Short Stories
Budget: £3750 - £7500 GBP
12-Dec-2025
10:54 GMT
On-Call Video Editing Team
Category: After Effects, Video Ads, Video Conferencing, Video Editing, Video Post Editing, Video Processing, Video Production, Video Services, Video Streaming, Videography
Budget: $10 - $30 USD
12-Dec-2025
10:54 GMT
Browse All Projects
Projects by Skills ...
Projects for 'android'
Projects for 'ajax'
Projects for 'asp'
Projects for 'aspnet'
Projects for 'cms'
Projects for 'cpp'
Projects for 'csharp'
Projects for 'css'
Projects for 'delphi'
Projects for 'design'
Projects for 'drupal'
Projects for 'excel'
Projects for 'facebook'
Projects for 'flash'
Projects for 'html'
Projects for 'java'
Projects for 'javascript'
Projects for 'joomla'
Projects for 'iphone'
Projects for 'mysql'
Projects for 'photoshop'
Projects for 'php'
Projects for 'python'
Projects for 'ruby'
Projects for 'seo'
Projects for 'sql'
Projects for 'sysadm'
Projects for 'translate'
Projects for 'typing'
Projects for 'twitter'
Projects for 'vbnet'
Projects for 'xml'
Projects for 'wordpress'
Projects for 'writing'
Read RSS feeds ... New!
RSS feed for 'android'
RSS feed for 'ajax'
RSS feed for 'asp'
RSS feed for 'aspnet'
RSS feed for 'cms'
RSS feed for 'cpp'
RSS feed for 'csharp'
RSS feed for 'css'
RSS feed for 'delphi'
RSS feed for 'design'
RSS feed for 'drupal'
RSS feed for 'excel'
RSS feed for 'facebook'
RSS feed for 'flash'
RSS feed for 'html'
RSS feed for 'java'
RSS feed for 'javascript'
RSS feed for 'joomla'
RSS feed for 'iphone'
RSS feed for 'mysql'
RSS feed for 'photoshop'
RSS feed for 'php'
RSS feed for 'python'
RSS feed for 'ruby'
RSS feed for 'seo'
RSS feed for 'sql'
RSS feed for 'sysadm'
RSS feed for 'translate'
RSS feed for 'typing'
RSS feed for 'twitter'
RSS feed for 'vbnet'
RSS feed for 'xml'
RSS feed for 'wordpress'
RSS feed for 'writing'
New!
Проекты на русском
(Projects in Russian)

Long URL:
www.1001freelanceprojects.com
Mobile version:
m.1001fp.com
Copyright © 2005-2024 1001 Freelance Projects