This document discusses NFC concepts, Windows 8/Phone 8 NFC applications, NDEF format, NDEF records, NFC tags, and the Windows.Networking.Proximity namespace for NFC on Windows platforms. It describes NFC communication modes and operating modes, how NFC can enable device pairing and data transfer in Windows 8 and Phone 8. It also covers different NFC tag types and forums, and common NFC chip compatibility issues.

1. Windows 8 / Windows Phone8
NFC
Bill Chung
Microsoft MVP

2. NFC 概念
• Near Field Communication / 近場通訊
• 通訊頻率： 13.56 MHz
• 距離： < 10公分
• Max bit rate： 424Kb/s
• Communication modes
• Active
• Passive
• Operating modes
• Read/Write (Reader Mode)
• Peer to Peer
• Card emulation (Windows 8/ Phone 8 目前不支援)

3. Windows 8 / Phone 8 上的
NFC應用
• 做為Bluetooth傳輸的認證交握 (Peer to Peer)
• 設備間直接傳輸 (Peer to Peer)
• 讀取/寫入 NFC tag (Read/Write)
• 電子錢包 (需搭配 SIM 卡 / Windows Phone 8)

4. NDEF Format
• NFC Data Exchange Format
• 定義 NFC 設備之間或是 NFC設備與Tag通訊內容封
裝的格式 (NDEF message)

5. NDEF Record

6. NDEF Short Record
If IL=1 If IL=0

7. NFC tag
• NFC Forum tag types
• Type 1: Broadcom BCM20203
• Type 2: NXP MIFARE Ultralight
• Type 3: Sony FeliCa
• Type 4: NXP DESFire, SmartMX-JCOP
• NXP-specific type tag
• Type Mifare Classic:NXP MIFARE Classic 1k, MIFARE
Classic 4K, and Classic Mini

8. NFC Forum Type 1
• Based on ISO-14443A standard.
• Read and re-write capable, also users can configure
the tag to be read-only.
• 96 bytes of memory, expandable up to 2KB.
• Communication speed 106 Kbits/s.
• No data collision protection.
• Compatible products : Broadcom BCM20203.

9. NFC Forum Type 2
• Based on ISO-14443A standard.
• Read and re-write capable, also users can configure
the tag to be read-only.
• 96 bytes of memory, expandable up to 2KB.
• Communication speed 106 Kbits/s.
• Anti-collision support.
• Compatible products : NXP MIFARE Ultralight.

10. NFC Forum Type 3
• Based on the Japanese Industrial Standard (JIS) X 6319-
4.
• Pre-configured at manufacture to be either read and re-
writable, or read-only.
• Variable memory, up to 1 MB per service.
• Supports two communication speeds, 212 or 424 Kbits/s.
• Anti-collision support.
• Compatible products : Sony FeliCa.

11. NFC Forum Type 4
• Based on ISO-14443A standard.
• Pre-configured at manufacture to be either read and
re-writable, or read-only.
• Variable memory, up to 32 KB per service.
• Supports three different communication speeds 106
or 212 or 424 Kbits/s.
• Anti-collision support.
• Compatible products : NXP DESFire, SmartMX-
JCOP.

12. Type MIFARE Classic
• Based on ISO-14443A standard.
• Read and re-write capable, also users can configure
the tag to be read-only.
• Variable memory 192/768/3584 Bytes.
• Communication speed 106 Kbits/s.
• Anti-collision support.
• Compatible products : NXP MIFARE Classic 1k,
MIFARE Classic 4K, and Classic Mini.

13. NFC 晶片相容性的問題
• NXP 相容的 NFC 晶片理論上可以讀取以上五種
Type 的 Tag
• 非 NXP 相容的晶片有可能連 Type 2 和 Type 4 都讀
不到

14. Windows.Networking.Proximity
namespace
• http://msdn.microsoft.com/en-
us/library/windows/apps/xaml/br241250.aspx
• 近場通訊主要的類別都在這個命名空間

15. Start
ProximityDevice.GetDefault
取得本機 NFC 設備
ProximityDevice.PublishMessage
ProximityDevice.SubscribeForMessage ProximityDevice.PublishBinaryMessage
訂閱訊息 ……..
發佈訊息
http://msdn.microsoft.com/zh-tw/library/windows/apps/xaml/br241212.aspx

16. API 中的 Message Protocol
• Windows • NDEF
• WindowsUri • NDEF:ext
• WindowsMime • NDEF:MIME
• Windows:WriteTag • NDEF:URI
• WindowsUri:WriteTag • NDEF:wkt
• WindowsMime:WriteTag • NDEF:WriteTag
• LaunchApp:WriteTag • NDEF:Unknown
• WriteableTag
• Pairing:Bluetooth
http://msdn.microsoft.com/en-us/library/windows/apps/xaml/hh701129.aspx

17. Message Type
• Protocol.SubType
• 例如
• Windows.Sample
• WindowsMime.image/jpeg
• NDEF:URI.http://contoso.com/sometype

18. NDEF Library for Proximity
APIs (NFC)
• https://ndef.codeplex.com/
• 減少處理 NDEF 格式的麻煩