NFC技术入门：改变互动方式的新科技

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"NFC For Dummies.pdf" 近场通信（NFC）是一种短距离无线通信技术，它允许设备在靠近时进行数据交换。NFC在技术领域中扮演着越来越重要的角色，尤其在移动支付、信息传输和智能设备交互方面。本书《NFC For Dummies》由Robert P. Sabella和John Paul Mueller撰写，旨在为初学者提供一个易懂且全面的NFC技术指南。 NFC的工作原理基于电磁场，两个设备之间的通信距离通常不超过4厘米。这种技术的核心特性在于它的便捷性和安全性。用户无需复杂的设置或输入长串密码，只需将支持NFC的设备（如智能手机或平板电脑）轻轻碰触，即可实现数据交换或交易。例如，Apple Pay等移动支付服务就利用了NFC技术，使得消费者可以轻松安全地完成购物付款。 NFC的应用范围广泛，涵盖了从零售业的无接触支付到社交媒体分享、电子票务、身份验证等多个领域。商家可以使用NFC标签，这些标签可以存储信息并被NFC设备读取，从而简化了商品促销和客户服务。此外，NFC还可以用于智能家居，让家庭设备间的连接和控制变得更加直观和简单。随着NFC技术的普及，开发者们正不断推出创新应用，进一步拓展其使用场景。未来，NFC可能会成为日常生活中的标准功能，如同我们现在使用Wi-Fi或手机摄像头一样自然。这将彻底改变我们与他人以及周围环境的互动方式，使得数据交换、交易和身份验证变得更加无缝和高效。然而，NFC并非没有挑战。隐私和安全是使用NFC时必须考虑的重要问题。尽管NFC技术本身具有一定的安全性，但恶意软件和欺诈行为可能通过不安全的NFC连接入侵用户的设备。因此，了解如何保护自己的设备免受攻击至关重要。《NFC For Dummies》这本书为那些对NFC技术感兴趣的新手提供了一个宝贵的资源，它解释了NFC的基本概念，展示了其潜在用途，并提供了如何安全使用NFC的建议。通过阅读此书，读者将能够跟上这一变革性技术的步伐，更好地理解和利用NFC带来的便利。

A single book can’t even begin to tell you about everything NFC has to oer. In

fact, you could probably read several books and still not begin to exhaust this

topic. That’s why the Parts of Ten is there. It gives you access to resources that

will keep you reading for quite some time to come. When you nish it all, you’ll

become an NFC guru, and everyone around you will be looking to you as the NFC

expert.

To make absorbing the concepts even easier, this book uses the following

conventions:

When you see terms in the text in italics, the surrounding text provides a

denition for that term.

Web addresses appear in monofont. If you’re reading a digital version of this

book on a device connected to the Internet, note that you can click the web

address to visit that website, like this:

http://www.dummies.com.

Foolish Assumptions

You might nd it dicult to believe that I’ve assumed anything about you —

after all, we haven’t even met yet! Although most assumptions are indeed foolish,

I made these assumptions to provide a starting point for the book.

Of course, you do need to have some desire to work with NFC to solve some sort of

problem or address a need. In many cases, the problem or need is business or task

specic, but you might be amazed at the ways in which you can use NFC to address

personal needs as well. The point is that you need to have some anticipated pur-

pose for using NFC to get the most out of this book.

You should also understand some basics of technology. For example, if you aren’t

on speaking terms with your smartphone, this book might not be a good t for

you. You do need some level of technical savvy to make good use of the material,

even though the bar isn’t set very high.

This book also assumes that you can access items on the Internet. Sprinkled

throughout are numerous references to online material that will enhance your

learning experience. However, these added sources are useful only if you actually

nd and use them.

2 NFC For Dummies

Icons Used in This Book

As you read this book, you see icons in the margins that indicate material of inter-

est (or not, as the case may be). This section briey describes each icon in this

book.

Tips are nice because they help you save time or perform some task without a

lot of extra work. The tips in this book are time-saving techniques or pointers to

resources that you should try in order to get the maximum benet from NFC or in

performing NFC-related tasks.

I don’t want to sound like an angry parent or some kind of maniac, but you

should avoid doing anything that’s marked with a Warning icon. Otherwise, you

might nd that your NFC application fails to work as expected, you get incor-

rect responses from seemingly bulletproof congurations, or (in the worst-case

scenario) you lose data or damage equipment.

Whenever you see this icon, think advanced tip or technique. You might nd these

tidbits of useful information just too boring for words, or they could contain the

solution you need to get an NFC solution running. Skip these bits of information

whenever you like.

If you don’t get anything else out of a particular chapter or section, remember the

material marked by this icon. This text usually contains an essential process or a

bit of information that you must know to work with NFC successfully.

Beyond the Book

This book isn’t the end of your NFC experience — it’s really just the beginning.

I provide online content to make this book more exible and better able to meet

your needs. That way, as you send me email about the book, I can address ques-

tions and tell you how updates to NFC aect book content. In fact, you gain access

to all these cool additions:

Cheat sheet: You remember using crib notes in school to make a better mark

on a test, don’t you? You do? Well, a cheat sheet is sort of like that. It provides

you with some special notes about tasks that you can do with NFC. You can

nd the cheat sheet for this book at

http://www.dummies.com/

cheatsheet/nfc

. It contains really neat information such as the NFC operat-

ing modes and tag types.

Introduction 3

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