1# Connected NFC Tag<a name="EN-US_TOPIC_0000001133207781"></a> 2 3- [Introduction](#section13587125816351) 4- [Architecture](#section13587185873516) 5- [Directory Structure](#section161941989596) 6- [Constraints](#section119744591305) 7- [Usage](#section1312121216216) 8- [Repositories Involved](#section1371113476307) 9 10## Introduction<a name="section13587125816351"></a> 11 12Near-field communication \(NFC\) is a non-contact identification and interconnection technology for short-distance wireless communication between mobile devices, consumer electronic products, PCs, and smart devices. 13 14For the devices has connected nfc tag chip, this component provides tag reading and writing. 15 16## Architecture<a name="section13587185873516"></a> 17 18**Figure 1** Connected NFC Tag Architecture<a name="fig4460722185514"></a> 19 20 21 22 23## Directory Structure<a name="section161941989596"></a> 24 25``` 26/foundation/communication/connected_nfc_tag 27├── interfaces # Interface 28│ └── inner_api # System inner interface 29├── frameworks # Framework interface 30│ └── js # Implementation of JS API 31│ └── napi # Napi implementation of JS API 32├── services # Service implementation 33├── test # Test code 34├── BUILD.gn # Build entry 35└── bundle.json # Component description 36``` 37 38## Constraints<a name="section119744591305"></a> 39 40- Devices must has the connected nfc tag chip. 41 42## Usage<a name="section1312121216216"></a> 43 44- connected nfc tag reading and writing. 45 46Please reference: docs/zh-cn/application-dev/reference/apis/js-apis-connectedTag.md 47 48## Repositories Involved<a name="section1371113476307"></a> 49 50hmf/communication/connected_nfc_tag 51 52
