Overview

Keepche is a React Native application that allows users to log activities automatically using NFC tags. Users can register NFC tags with custom names, and whenever a tag is scanned, an activity is automatically logged and stored.

Features

• Automatic NFC Scanning – Logs activities when an NFC tag is tapped.
• Manual Scanning – Users can manually trigger NFC scanning from the home screen.
• Activity History – View previously logged activities.
• Tag Management – Register new NFC tags and manage them in a dedicated list.
• Background Processing – The app sends a notification when an activity is logged, even if the app is in the background.

Usage Guide

1. Register a New NFC Tag

1. Navigate to the "Tags List & New Tag" section.
2. Tap "Register a New NFC Tag" and scan an NFC tag.
3. Assign a unique name to the tag.
4. The tag is now saved in the database and ready to use.

2. Log an Activity with NFC

• Simply tap an NFC tag near your phone.
• The app will detect the tag and automatically log an activity.
• A notification will confirm that the activity was logged.

3. View Activity History

• Open the "Activity History" section.
• See all previously logged activities with timestamps.
• Activities are stored in Firebase Firestore.

4. Manually Scan an NFC Tag

• Tap "Scan Activity Manually" on the home screen.
• This will start the NFC scanning process.
• If you tap the button again while scanning, the process will cancel.

Technologies

• React Native – UI framework for mobile development
• TypeScript – Strongly-typed JavaScript
• Firebase Firestore – Cloud database for storing logs and tags
• React Navigation – Navigation handling between screens
• Notifee – Push notifications for activity confirmation
• react-native-nfc-manager – NFC scanning and writing library
• React Native Paper – UI components and styling
• Android Application Record (AAR) – Ensures automatic app launch when scanning NFC tags

Screenshots

How to run this app

Based on the React Native project, bootstrapped using @react-native-community/cli.

Note: Make sure you have completed the Set Up Your Environment guide before proceeding.

Step 1: Start Metro

First, you will need to run Metro, the JavaScript build tool for React Native.

To start the Metro dev server, run the following command from the root of your React Native project:

# Using npm
npm start

# OR using Yarn
yarn start

Step 2: Build and run your app

With Metro running, open a new terminal window/pane from the root of your React Native project, and use one of the following commands to build and run your Android or iOS app:

Android

# Using npm
npm run android

# OR using Yarn
yarn android

iOS

For iOS, remember to install CocoaPods dependencies (this only needs to be run on first clone or after updating native deps).

The first time you create a new project, run the Ruby bundler to install CocoaPods itself:

bundle install

Then, and every time you update your native dependencies, run:

bundle exec pod install

For more information, please visit CocoaPods Getting Started guide.

# Using npm
npm run ios

# OR using Yarn
yarn ios

If everything is set up correctly, you should see your new app running in the Android Emulator, iOS Simulator, or your connected device.

This is one way to run your app — you can also build it directly from Android Studio or Xcode.