Course Overview

What is NFC? An Introduction to NFC Tags, Cards, and Readers

Introduction

Tag Counter Game App

Set up a React Native NFC iOS and Android App

An Introduction to the React Native NFC Module Library

How to Build an iOS NFC Tag Scanner App With React Native

How to Build an Android NFC Tag Scanner App With React Native

App1 Conclusion

Tag-Counter Game App

Tap-And-Go App

How to Code an NDEF Message With the NFC Tools App

A Deep Dive Into NDEF and NdefRecord to Share Data via NFC

Tap-And-Go Project Setup With React Native and NFC Manager

How to Read NFC Tags and Write NDEF Data With NfcManager

How to Build a Website NFC Tag And Use Deep Linking With NFC

App2 Conclusion

Tap-And-Go  App

NFC Pokemon App

The User Flow of an NFC Tag Reader and Writer App

Intro to Type 2 NFC Tags: Read and Write NFC Tags With React

How to Sign and Verify NFC Data With React Native and elliptic

How to Add Memory Protection to NFC Tags For Copy Protection

App3 Conclusion

NfcPokemon  App

react

react-native

react-native-elements

react-native-nfc-manager

react-native-paper

## What we will cover in this course

First, I will provide an overview of NFC technology, so you can understand basic concepts and terms. After that, we will build three apps throughout this course.

### App 1: Tag Counter

![image](https://user-images.githubusercontent.com/10307875/148626752-38646752-bb16-4db2-8324-9fc19efdef04.png)

App 1 is a game app to count how much time a user needs to scan five NFC tags. You will learn:
- how to properly set up an NFC project 
- how to trigger NFC scanning
- the difference from iOS and Android regarding NFC feature

### App 2: Tap-and-Go

![image](https://user-images.githubusercontent.com/10307875/148627270-2dc43df8-8d5c-479d-8dd6-041b236d7009.png)

App 2 is about NFC Data Exchange Format (NDEF), which is the standard NFC data format supported by both iOS and Android. NDEF can be used for almost any NFC tag. We will build an NDEF reader-writer app, and you will learn:
- how to write specific NDEF URI into NFC tags 
- how to read NDEF URI and trigger corresponding actions, for example, opening an URL, making a phone call, or sending a message. 
- how to use deep linking with NFC tags.

### App 3: NFC Pokemon

![image](https://user-images.githubusercontent.com/10307875/148627203-562e742d-973e-406c-8e9e-a871ccdaf6d9.png)

App 3 dives into low-level NFC programming, which directly manipulates the NFC tag’s internal memory and uses proprietary NFC commands. 
The app we'll build is called "NFC Pokemon," which is a digital identity management platform. It can seal a specific Pokemon, for example, a Pikachu, into an NFC tag. 

When building this app, you will learn:
- how to use low-leve tag command to directly manipulate NFC tag's internal memory
- how to create digital signatures in React Native
- how to use proprietary password protection command for NXP NTAG 213 / 215

NFC technology is everywhere in our daily life, from transportation, access control, to payment system. However, understanding NFC is still a hard topic because of its wide technology landspace. 

So in this course, We will guide you from the simplest case like using common NDEF format, all the way to a complex digital identity management app which leverages some unique NFC features.

The newline Guide to NFCs with React Native

How to integrate NFC feature into your React Native app

How to handle the differences between Android and iOS regarding NFC feature

Understand NDEF and use it across iOS and Android

Understand low-level NFC programming and communicate with NFC tags directly

How to use asymmetric cryptography library with React Native

How to use password protection commands from NTAG 21x NFC tags

Hello, in this lesson, I will walk you through the NFC Pokemon app flow.

Let's start from the admin side. On the home screen, the administrator user first presses the 

Then the administrator selects the pokemon they want to create from the list. 

Our app will jump to the Pokemon Detail Screen, which displays the selected Pokemon info, and the user can press the 

Let's take a closer look to see the core NFC operations. There're three major steps:

This step is used to prevent a third-party application from tampering or overriding the content in our NFC Pokemon tags. This should protect only the write operation. We still need to allow our tags to be read.

The protection mechanism is a proprietary one, which can be found in most of the NXP NTAG product lines.

The second step is, of course, to write the Pokemon data into our NFC tags. We first load the selected Pokemon information, then perform NFC write operation. We will manipulate the NFC tag's internal memory directly, without using a higher-level NDEF operation.

Unlike the previous password protection commands, the commands to read or write the NFC tag's internal memory are not proprietary. They are defined by NFC Forum Type 2 Tag Platform Specification. They are well-known and public and can be used in all Type 2 Tags. 

---
title: The User Flow of an NFC Tag Reader and Writer App
isPublicLesson: false
privateVideoUrl: https://fullstack.wistia.com/medias/08ubirc86p
---

Hello, in this lesson, I will walk you through the NFC Pokemon app flow.

## Admin flow

![image](https://user-images.githubusercontent.com/10307875/148342036-52ed2df7-e7a5-444b-acc9-0b8433d1c956.png)

Let's start from the admin side. On the home screen, the administrator user first presses the **CREATE-POKEMON** button. 

Then the administrator selects the pokemon they want to create from the list. 

Our app will jump to the Pokemon Detail Screen, which displays the selected Pokemon info, and the user can press the **CREATE** button to start the NFC operations.

Let's take a closer look to see the core NFC operations. There're three major steps:

-   Password auth
-   Write Pokemon data
-   Write signature

Let's start with "Password Auth."

This step is used to prevent a third-party application from tampering or overriding the content in our NFC Pokemon tags. This should protect only the write operation. We still need to allow our tags to be read.

The protection mechanism is a proprietary one, which can be found in most of the NXP NTAG product lines.

The second step is, of course, to write the Pokemon data into our NFC tags. We first load the selected Pokemon information, then perform NFC write operation. We will manipulate the NFC tag's internal memory directly, without using a higher-level NDEF operation.

Unlike the previous password protection commands, the commands to read or write the NFC tag's internal memory are not proprietary. They are defined by NFC Forum Type 2 Tag Platform Specification. They are well-known and public and can be used in all Type 2 Tags. 

Recall the Tag Type definitions below the NDEF definition in the NFC specification overview diagram. So the idea is that every Tag Type can support NDEF. 

Learn

The newline Guide to Building Your First GraphQL Server with Node and TypeScript

Teach

Amelia Wattenberger

Author of Fullstack D3

Community

The newline Guide to NFCs with React Native

Module 1: Introduction

Introduction:

Start Here

Lesson 1: (5:40)

Course Overview

Lesson 2: (10:37)

What is NFC? An Introduction to NFC Tags, Cards, and Readers

Module 2: Tag-Counter Game App

Lesson 1: (1:41)

Tag Counter Game App

Lesson 2: (11:10)

Set up a React Native NFC iOS and Android App

Lesson 3: (7:42)

An Introduction to the React Native NFC Module Library

Lesson 4: (10:03)

How to Build an iOS NFC Tag Scanner App With React Native

Lesson 5: (16:36)

How to Build an Android NFC Tag Scanner App With React Native

Lesson 6: (3:14)

App1 Conclusion

Module 3: Tap-And-Go App

Lesson 1: (1:40)

Tap-And-Go App

Lesson 2: (7:10)

How to Code an NDEF Message With the NFC Tools App

Lesson 3: (9:30)

A Deep Dive Into NDEF and NdefRecord to Share Data via NFC

Lesson 4: (11:46)

Tap-And-Go Project Setup With React Native and NFC Manager

Lesson 5: (18:19)

How to Read NFC Tags and Write NDEF Data With NfcManager

Lesson 6: (12:28)

How to Build a Website NFC Tag And Use Deep Linking With NFC

Lesson 7: (3:57)

App2 Conclusion

Module 4: NfcPokemon App

Lesson 1: (2:12)

NFC Pokemon App

Lesson 2: (6:51)

The User Flow of an NFC Tag Reader and Writer App

Lesson 3: (17:20)

Intro to Type 2 NFC Tags: Read and Write NFC Tags With React

Lesson 4: (17:29)

How to Sign and Verify NFC Data With React Native and elliptic

Lesson 5: (14:48)

How to Add Memory Protection to NFC Tags For Copy Protection

Lesson 6: (4:30)

App3 Conclusion

The User Flow of an NFC Tag Reader and Writer App