Introduction ：
NFC (Near Field Communication)
Agenda:
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NFC
NFC
NFC
NFC
規格介紹
發展組織
應用開發
國內發展情形
NFC
• A short-range radio technology
• Operates at 13.56 MHz
• Transfers data at up to 424 Kbits/second
• Transmission range is so short, it is
inherently “secure”
• NFC is still early stages, very young
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2007 Eric Chen .
NFC Standards
• ISO 14443 Type A and 14443 Type B
standards + FeliCa
– ISO 14443 is a four-part international
standard for contact-less smart cards
operating at 13.56 MHz in close proximity with
a reader antenna
• ISO 18092
– Defines communication modes for NFC
Interface and Protocol
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NFC Communication Modes
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應用範疇
 Touch & GO 隨觸即通
 Touch & Confirm 隨觸即購
 Touch & Connect 隨觸即連
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NFC 功能
 一、身分識別：具有識別功能，能解決記憶多個密碼的麻煩。
 二、點對點的資料傳輸：因此藉由NFC，多個設備如數位相機、PDA
、電腦、手機等之間，都可以進行無線互通，交換資料或服務。
 三、資訊讀取：比如海報或者展覽資訊上貼有特定晶片，這些晶片無
需電源，NFC手機即可快速讀取資訊。
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2007 Eric Chen .
ISO 18092 NFCIP-1 運作模式
 ASK (Amplitude Shift Keying)
 RFCA (RF Collision Avoidance)
 Time Slot for 雙工
 主動模式 Active Type
 範圍 20cm
 依規範可高達846, 1695, 3390, 6780 Kbps
 被動模式 Passive Type
 範圍 10cm
 傳輸數率：106, 212,424 Kbps
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主動模式
Sensing Distance: 20 cm
Speed: 846k, 1695k, 3390k, 6780kbps
ASK Modulation
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被動模式
Sensing Distance: 10 cm
Speed: 106k, 212k, 424kbps
ASK Modulation
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Peer to Peer 模式
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NFC / RFID / IR / Bluetooth 比較
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J2ME 架構
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Contactless Communication API JSR 177
 JSR 177 係一組Java套件，其全名為Security And Trust Services API
(SATSA)，由Gemplus提出，其目的：在提供一組與安全相關的程式
模組，給J2ME手機的應用程式(MIDlet) 呼叫使用。如下圖5，該組套
件提供了PKI套件、加解密套件(CRYPTO)以及APDU、JCRMI套件，
其中與晶片金融卡最直接相關的是SATSA-APDU套件。SATSAAPDU中的APDU Connection 類別， 可以和手機內的晶片卡建立
ISO7816通道物件，行動銀行MIDlet (非現行使用STK技術的行動銀
行) 可以透過該通道物件存取手機內的晶片金融卡元件，進行線上查
詢/轉帳/購貨等個人理財及連線交易。另一個可行的應用是MP3下載
MIDlet，可以透過通道物件存取手機內的晶片金融卡電子錢包元件，
以支付下載費用。
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2007 Eric Chen .
JSR 177
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JSR 177
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Contactless Communication API JSR 257
 針對J2ME架構所開發的應用程式稱為MIDlet.
 JSR257所指的在J2ME的作業平台下，所使用的無線通訊可以是透過
無線射頻技術Radio Frequency Identification (RFID)、近場通訊 Near
Field Communication (NFC) 或是二維條碼bar codes的方式來進行資
料傳輸。透過此無線傳輸方式，在NFC模式下可以在兩個NFC裝置上
傳輸小量的資料；RFID的Reader與Tag間也可透過無線傳輸的方法來
進行資料交換或擷取。
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2007 Eric Chen .
JSR 257
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JSR 257
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國內發展情形
 近端交易技術(Near Field Communication)推動計畫
 NFC 聯盟
 2005 第一階段目標是製造出NFC手機，提供悠遊卡功能
 2006 計畫推出服務，中華電信整合SIM卡與悠遊卡成為CombiSIM卡
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NFC-based payment process
in retail environment
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Terminology
• NDEF - NFC Data Exchange Format
– Such as Smart Posters, URI Records
• RTD - Record Type Definition
– An NFC-specific record type and type name which may be
carried in an NDEF record
• NDEF message
– Basic message construct defined by this specification. An
NDEF message contains one or more NDEF records
• NDEF record
– Contains a payload described by a type, a length, and an
optional identifier
• NDEF payload
– The application data carried within an NDEF record
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NFC Programming
Using (JSR-257) Java Contactless
Communication API
• Discover and exchange data with
contact-less targets
–NDEF tags
–RFID tags
–External smart cards
• Support for visual tags
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Contactless Communication API
Java Packages
1. javax.microedition.contactless (Mandatory)
• target discovery and classes common to all
targets
2. javax.microedition.contactless.ndef
• communicate with tags (NDEF formatted data)
3. javax.microedition.contactless.rf
• communicate with RFID (no NDEF formatted
data)
4. javax.microedition.contactless.sc
• communication with external smart cards
5. javax.microedition.contactless.visual
• reading and generating visual tags
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Contact-less Integrated Business
2D Barcode
SMS
SMS
Payment System
NFC
Contact-less
Business
Plateform
OTA
NFC
NFC Device
Identification
Authentication
e-Purse
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Contact-less Integrated Business
Get Online service
Or digital product
Over the air!
Your NFC
device is your
travel card!
NFC device
As ticket!
QR Code
SMS
SMS
Payment service!
Buy goods from
vending machines
with your phone!
NFC
OTA
Contact-less
Business
NFC Application
Get information
about your current
job or task!
Get information
through Kiosk!
Plateform
NFC As Credit Card !
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2007 Eric Chen .
Wireless WAN @ IM. NTU
2007 Eric Chen .