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What is NFC? NFC (Near Field Communication), jointly developed by Philips and Sony, is a contactless identification and interconnection technology that enables close wireless communication between mobile devices, consumer electronics, PC, and smart control tools. NFC provides a simple, touch-based solution that allows consumers to exchange information, access content and services simply and intuitively. NFC integrates contactless card reader, contactless card, and peer-to-peer functions into a single chip, creating countless new opportunities for consumers’ lifestyles. This is an open interface platform that can set up wireless networks quickly and actively. It is also a virtual connector for existing cellular networks, Bluetooth, and wireless 802.11 devices. What is the Range of NFC? Theoretically, the maximum NFC tag range is 20 cm. But, in the real world, you would rarely find a reader of that range. This makes sense because NFC technology should be used at a relatively close distance for security reasons. At a shorter identification distance, NFC can diminish the probability of undesirable capture, especially to prevent our credit cards or bank cards from being remotely stolen by criminals. Mostly it requires you to tap the tag, which makes it more secure to pay with NFC. NFC VS RFID:What is the difference? Like RFID, NFC information is also transmitted by electromagnetic induction coupling in the wireless frequency part of the spectrum. But there is still a big difference between the two. 1,NFC is a wireless connection technology that provides easy, secure, and rapid communication. Its transmission range is smaller than that of RFID, and RFID can reach several meters or even dozens of meters. However, NFC adopts the unique signal attenuation technology and has some advantages that RFID does not have. For example, short distance, high bandwidth, low energy consumption, etc. 2,NFC is compatible with the existing contactless smart card technology and has become a formal standard supported by more and more major manufacturers. 3,NFC is also a short-range connection protocol that provides easy, secure, rapid, and automatic communication between various devices. Compared with other connection methods in the wireless world, NFC is a kind of close private communication. 4,RFID is more used in production, logistics, tracking, asset management, while NFC plays a huge role in access control, public transportation, mobile payment, and other fields. NFC VS Infrared & Bluetooth NFC is also superior to infrared and Bluetooth transmission. As a consumer-oriented trading mechanism, NFC is faster, more reliable, and much simpler than infrared, and does not require strict alignment to transmit data. Compared with Bluetooth, NFC is suitable for short-distance transactions and exchanging important data such as financial information or sensitive personal information. Bluetooth can make up for the lack of NFC communication distance and is suitable for long-distance data communication. Therefore, NFC and Bluetooth complement each other and co-exist. The fast and lightweight NFC protocol can be used to guide the Bluetooth pairing process between two devices, promoting the use of Bluetooth. Comparison between NFC, Bluetooth and Infrared How does NFC work? NFC is a short-range high-frequency radio technology. The NFCIP-1 standard stipulates that the communication distance of NFC is within 10 cm, the operating frequency is 13.56MHz, and the transmission speed is 106Kbit/s, 212Kbit/s, or 424Kbit/s. The NFCIP-1 standard specifies the transmission speed, codec method, modulation scheme, and frame format of the RF interface of NFC equipment in detail. It also defines the transmission protocol of NFC, including startup protocol and data exchange method. NFC communication technology evolved from contactless RFID and is backward compatible with RFID, which is mainly used to provide M2M (Machine to Machine) communication in handheld devices such as mobile phones. There are three main working modes of NFC terminals: 1,NFC Active Mode Because both the originating device and the target device must actively generate RF fields when sending data to each other, so this mode is called active mode. They both need power supply devices to provide the energy to generate RF fields and can take turns transmitting signals to each other. The NFC terminal can act as a card reader and emit RF fields to identify and read/write other NFC device information. This mode of communication is the standard model for peer-to-peer communication and can achieve very fast connection rates. 2,NFC Passive Mode In NFC passive mode, the NFC originating device (also known as the primary device) needs a power supply device. The master device uses the power supply device to provide the RF field and sends the data to the NFC target device (also known as the slave device). The RF field generated by the primary device is used to power the circuit of the slave device. Data sent by the primary device is received. Load modulation is used to transmit data from the slave device back to the primary device at the same speed. Because this working mode does not generate the RF field from the device, but passively receives the RF field generated by the master device, it is called passive mode. In this mode, the NFC master device can detect a non-contact card or NFC target device and establish a connection with it. 3,Bidirectional Mode In this mode, both NFC devices are in the active mode that they can actively emit RF fields to establish peer-to-peer communication. NFC-enable devices can exchange data in active or passive mode. In passive mode, the device that initiates NFC communication, also known as the NFC sponsor, provides the RF field throughout the communication process. At present, our common NFC working mode is the passive mode, very suitable for swiping the mobile phone to take the bus, shopping, etc. Active mode is commonly seen in reading NFC tag information. And the bidirectional mode is mostly used for information exchange, such as exchanging business cards. NFC Functional Mode 1,Read/Write In this mode, phones with NFC enabled can read and write any NFC tags and obtain the data from it. 2,Peer-to-Peer Two NFC devices can exchange data. For example, you can share a Bluetooth or Wi-Fi password to start Bluetooth or connect to Wi-Fi. You can also exchange data such as virtual business cards or digital photos. 3,Card Emulation NFC-enabled phones act as readers when interacting with tags. In this mode, the mobile phone can also be used as a tag or a wireless card to be read. NFC Standard ISO 14443 is a well-known international standard originally designed for contactless chip cards in 13.56MHz radio communications. ISO 14443 defines a protocol stack from the wireless layer to the command protocol. There are two versions of wireless layer ISO14443-2, which have different modulation and bit coding methods. ISO 14443 specifies two versions of the package framework and the underlying protocol portion (ISO 14443-3). The highest layer of the ISO stack defines the command interface (ISO 14443-4) that transmits information. NFCIP-1 NFCIP-1 protocol is based on ISO 14443. The main difference is a new command protocol that replaces the top layer of the previous protocol stack. NFCIP-1 includes two communication modules that enable NFC devices to operate in peer-to-peer mode and also support communication with NFCIP-1-based NFC tags. MIFARE MIFARE refers to the type of NFC tag developed by NXP Semiconductor. MIFARE tags are widely used in memory cards for transport applications. ISO 14443 defines the protocol stack from the wireless layer to the command protocol. FeliCa FeliCa is a patented NFC tag technology developed by Sony, which is widely used in exclusive payment and transportation applications in Asia. FeliCa tags are also integrated into the mobile phone model of the mobile FeliCa system. Felica tags belong to the Japanese industry standard. The tag is based on ISO 18902 in passive mode, with additional authentication and encryption features. NFC Forum Type Type 1 - Type 1 tags are cheap and suitable for a variety of NFC applications - Based on ISO-14443A standard - Readable and rewritable and configurable as read-only - 96-byte memory, scalable to 2KB - Transmission rate 106kbits/s - No data conflict protection - Compatible products: Innovision Topaz, Broadcom BCM20203 Type 2 - Type 2, like type 1, is derived from the NXP MIFARE Ultralight tag - Based on ISO-14443A standard - Readable and rewritable and configurable as read-only - 96-byte memory, scalable to 2KB - Transmission rate 106kbits/s - Support for data conflict protection - Compatible products: NXP MIFARE Ultralight Type 3 - Type 3 is derived from the unclassified part of the Sony FeliCa tag. It is more expensive than the label of type 1 and 2, suitable for more complex applications - Based on the Japanese industry-standard (JIS) X 6319-4 - Define properties that are readable, rewritable, or read-only at production time - Variable memory, up to 1MB space - Two transfer rates are supported: 212 or 424kbits/s - Support for data conflict protection - Compatible products: Sony FeliCa Type 4 - Type 4 is similar to type 1 in that it is derived from the NXP DESFire tag - Based on ISO-14443A standard - Define properties that are readable, rewritable, or read-only at production time - Variable memory, up to 32kB - Three transfer rates are supported: 106,212 or 424kbits/s - Support for data conflict protection - Compatible products: NXP DESFire, SmartMX-JCOP Type 5 - It is the latest type of NFC tag defined in recent years. NFC Forum introduced this series of chips to meet the growing variety of long-distance, miniaturized NFC tags, and their applications - Based on ISO-15693 standard - Readable and rewritable - Variable memory: 256 bits, 896 bits, 1280 bits, 2528 bits - Up to 53kbits/s - Support for data conflict protection - Compatible products: ICODE SLI-Xseries/TI 2K/ST LRI2K Type 6 - This type is only compatible with some mobile phones - Based on ISO-14443A standard - Readable and rewritable - Variable memory: 1KB,4KB - Data transfer of 106kbits/s - Support for data conflict protection - Compatible products: M1(S50,F08) NFC Application NFC mobile phone has a built-in NFC chip, a part of the RFID module, which can be used as an RFID passive tag-to pay for fees, or as an RFID reader-for data exchange and acquisition. NFC technology supports a variety of applications, which can be divided into the following five categories: Touch and Go: Such as access control management, tickets, logistics management, and so on. All that users need to do is put the NFC tag close to the card reader. Common NFC products for such applications include the NFC keychain, NFC card, NFC wristband. Touch and Pay: Such as contactless mobile payment. The user can make payment and confirm the transaction by placing the device near the POS terminal embedded with NFC module. Touch and Connect: Connect two NFC devices for peer-to-peer data transmission, such as downloading music, sending pictures to each other, exchanging address books, etc. Touch and Explore: Users can browse the relevant information by putting the NFC phone close to the smart public phone or poster with NFC function on the street. Load and Touch: Users can receive and download information through the GPRS network for functions such as payment or access control. For example, users can send text messages in a specific format to the mobile phone of the housekeeper to control the housekeeper’s access to the house. NFC Stickers NFC stickers are a low-cost NFC solution that almost all of us can afford. There is a small NFC chip in it and usually encapsulated by paper, PVC or PET material. NFC stickers come in many chips, sizes, colors, patterns that you can choose according to the applications. Common NFC Chips are Ntag213/ 215/216, DESFire EV1, M1, Topaz 512, etc. NFC stickers are widely used in advertising, consumer electronics, gaming, healthcare, retail, social media, and other fields. NFC Wristband NFC wristband, another packaging form of NFC tags, combines fashion and intelligence. In addition to a variety of chip options, wristband styles are varied and colorful, common are silicone wristband, fabric wristband, PVC wristband, paper wristband, etc. NFC wristband can be customized, choose your brand color, printed with your LOGO, is an excellent marketing method. It is often used in festivals, events, medical management, playgrounds, gyms, etc. NFC Card NFC card is the most common form of NFC packaging. The standard size is CR80. NFC card has high-security performance and is often used in applications that require high-security performance. Our subway card, bus card, shopping card, and membership cards are NFC cards. Besides, the game card used by people who like to play Amiibos is also an NFC card.NFC cards have white cards and printing cards according to customer requirements. NFC Anti-metal Tag NFC anti-metal tags are specially designed to work well on metal surfaces. One side is paper, PVC, PET, or other material, and the other side is an anti-metal sticker. The common sizes are 20mm diameter, 25mm diameter, 35mm diameter, etc. It is a perfect NFC solution for some special applications that need to work on the metal surface. For example, IT asset management, medical device management, consumer electronics, etc. NFC Epoxy Tag This NFC tag has an attractive appearance like a crystal clear button, small and exquisite. It is made of epoxy material and has the characteristics of corrosion-resistant, anticollision, waterproof, and durable. You can define what it like, circle, square, heart shape, or animal shape as well as pattern inside it. It is very suitable for access control management, pet management, parking management, child pickup, cashless payment, social interaction, etc. Q & A Relevant articles - 26 Ingenious Ways You Can Do With NFC Tag Uses - NFC vs. RFID: What’s the Difference Between Them? - Common RFID Standards and Protocols You Must Know - NFC vs. RFID: What’s the Difference Between Them? - Learn The Truth About RFID Sticker Structure And Material - What is RFID tag? Learn about common RFID applications
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NFC प्रविधि रेडियो फ्रिक्वेन्सी पहिचान (RFID) प्रविधिमा आधारित छ। NFC ट्याग एक विशेष प्रकारको RFID ट्याग हो जुन NFC-सक्षम यन्त्र, जस्तै स्मार्टफोन द्वारा पढ्न सकिन्छ। प्रविधि प्रयोग गरिन्छ 13.56 MHz यन्त्रहरू बीच सञ्चार गर्न विद्युत चुम्बकीय क्षेत्रहरू। NFC ट्यागहरू उत्पादन, प्याकेजिङ्ग, वा पोस्टकार्डहरूमा इम्बेड गर्न सकिन्छ। तिनीहरू पोस्टर वा बिलबोर्डहरूमा पनि राख्न सकिन्छ। NFC ट्यागहरूले वेब ठेगाना वा फोन नम्बर जस्ता जानकारीको सानो मात्रा समावेश गर्दछ। जब एक NFC-सक्षम यन्त्र NFC ट्यागको नजिक आउँछ, उपकरणले ट्यागमा जानकारी पढ्न सक्छ। NFC ट्यागहरू विभिन्न आकार र आकारहरूमा आउँछन्। तिनीहरूको कार्यक्षमता NFC फोरमहरू द्वारा विनियमित छ, यन्त्रहरू बीच अन्तरसञ्चालन सुनिश्चित गर्दै। NFC फोरम के हो? NFC फोरम एक गैर-लाभकारी उद्योग संघ हो जसले नियर फिल्ड कम्युनिकेसन टेक्नोलोजीको प्रयोगलाई बढावा दिन्छ। NFC फोरम नोकिया, फिलिप्स र सोनी द्वारा 2004 मा स्थापित भएको थियो। संगठनले विनिर्देशहरू सिर्जना गर्दछ, उत्पादनहरू प्रमाणित गर्दछ, र NFC प्रविधिको प्रयोगलाई बढावा दिन्छ। यो NFC प्रविधि प्रयोग वा विकास गर्न चाहने सबै कम्पनीहरूको लागि खुला छ। यसले धेरै NFC ट्याग प्रकारहरू सिर्जना गरेको छ, प्रत्येक फरक उद्देश्यका साथ। यस नियमले यन्त्रहरू बीचको प्रयोग र अन्तरसञ्चालनमा सहजता सुनिश्चित गर्दछ। - NFC प्रकार 1 ट्याग यी पढ्न/लेख्ने क्षमता भएका सामान्य ट्यागहरू हुन्। यद्यपि, तपाईले टाइप 1 ट्यागहरू पढ्न मात्र मिलाउन कन्फिगर गर्न सक्नुहुन्छ। तिनीहरू प्रायः थोरै मात्रामा डाटा भण्डारण गर्न प्रयोग गरिन्छ, जस्तै URL, फोन नम्बर, वा इमेल ठेगाना। प्रकार 1 ट्यागहरू ISO 14443A मानक प्रयोग गरिन्छ, यस विशिष्ट नियमसँग अनुरूप सबै NFC-सक्षम यन्त्रहरूसँग अनुकूलता सुनिश्चित गर्दै। यसमा ९६-byte मेमोरी र 106k को एक प्रसारण दरbits/s यसले सरल जानकारी भण्डारण गर्नको लागि आदर्श बनाउँछ। यद्यपि, यी ट्यागहरूमा विस्तृत डेटा द्वन्द्व संरक्षण संयन्त्रको अभाव छ, जसले गर्दा डाटा ओभरराइट वा भ्रष्ट हुन सक्छ। जस्तै, तपाइँ एकै समयमा टाइप 1 ट्यागको दुई फरक ब्लकहरूमा लेख्न सक्नुहुन्न। यिनै कमीकमजोरीका कारणले । यी ट्यागहरू धेरै किफायती छन्। तिनीहरू प्राय: खुद्रा स्टोरहरूमा ग्राहक वफादारी कार्यक्रमहरू वा सूची ट्र्याकिङका लागि प्रयोग गरिन्छ। तिनीहरू Innovision र Topaz प्रणालीहरूसँग पनि उपयुक्त छन्। - NFC प्रकार 2 ट्याग टाइप 2 ट्यागहरू ISO 14443A मानकमा आधारित छन् र पढ्न/लेख्ने क्षमता छ। तिनीहरू एक विस्तृत डेटा द्वन्द्व संरक्षण संयन्त्रको साथ पनि आउँछन्, जसले डाटालाई ओभरराइट वा भ्रष्ट हुनबाट रोक्छ। यो दुई प्रयोग गरेर गरिन्छ-byte लक नियन्त्रण TLV (ट्याग लक नियन्त्रण लेनदेन प्रोटोकल)। टाइप २ ट्यागमा ४८/१४४ छ-byte मेमोरी र 106k को एक प्रसारण दरbits/s तिनीहरू कसरी कन्फिगरेसनमा निर्भर गर्दछ, पढ्न/लेख्न वा पढ्न मात्र सकिन्छ। लक नियन्त्रण TLV ले क्रेडिट कार्ड विवरणहरू जस्ता अधिक मूल्यवान जानकारीहरू भण्डारण गर्नको लागि यसलाई आदर्श बनाउँछ। यसबाहेक, यी ट्यागहरू NXP मा आधारित छन् MIFARE Ultralight ट्याग, सम्पर्करहित भुक्तानीहरूको लागि सबैभन्दा लोकप्रिय प्लेटफर्महरू मध्ये एक। यसको उच्च-सुरक्षा सुविधाहरूले यसलाई पहुँच नियन्त्रण र पहिचान व्यवस्थापन जस्ता डेटा सुरक्षा सर्वोपरि हुने अनुप्रयोगहरूको लागि आदर्श बनाउँछ। - NFC प्रकार 3 ट्याग टाइप 3 ट्यागहरू Sony FeliCa प्लेटफर्ममा आधारित हुन्छन् र सञ्चार गर्न (JIS) X 6319-4 उद्योग मानक प्रयोग गर्छन्। तिनीहरू पढ्न/लेखन क्षमता र 1/4/9-किलोको साथ आउँछन्byte मेमोरी। Sony FeliCa प्लेटफर्म जापानमा सार्वजनिक यातायात प्रणालीहरूमा प्रयोग गरिन्छ, जस्तै Suica कार्ड। टाइप 3 ट्यागहरूमा धेरै सुरक्षा सुविधाहरू छन् जसले तिनीहरूलाई संवेदनशील जानकारी भण्डारण गर्नको लागि आदर्श बनाउँदछ, जस्तै क्रेडिट कार्ड विवरणहरू वा मेडिकल रेकर्डहरू। यी ट्यागहरूमा डेटा इन्क्रिप्टेड छ र केवल आधिकारिक उपकरणहरू द्वारा पहुँच गर्न सकिन्छ। थप रूपमा, यी ट्यागहरूले 212 वा 424k घमण्ड गर्दछbits/s डाटा प्रसारण दर। यो वास्तविक-समय अनुप्रयोगहरू, जस्तै इलेक्ट्रोनिक टिकट र सम्पर्करहित भुक्तानीहरूको लागि पर्याप्त छिटो छ। यसबाहेक, तपाइँ यसलाई पढ्न मात्र वा पढ्न/लेख्नको लागि कन्फिगर गर्न सक्नुहुन्छ। यो लचिलोपनले यसलाई अनुप्रयोगहरूको विस्तृत दायराको लागि आदर्श बनाउँछ। - NFC प्रकार 4 ट्याग टाइप 4 ट्यागहरू NXP DESFire ट्यागमा आधारित छन् र SmartMX-JCOP सँग 100% उपयुक्त छन्। तिनीहरू ISO 14443A र B मापदण्डहरूद्वारा विनियमित छन् र पढ्न/लेख्न वा पढ्न-मात्र क्षमताको साथ आउँछन्। ट्यागहरूमा एक विस्तृत डेटा द्वन्द्व रोकथाम संयन्त्र पनि छ, जसले तपाईंलाई एकै साथ दुई फरक ब्लकहरूमा लेख्न अनुमति दिन्छ। तिनीहरूले 4k को एक प्रभावशाली प्रसारण दर संग 32Kb / 106Kbs डाटा भण्डारण गर्न सक्छन्bits/s, 212kbits/s, वा 424kbits/s ट्यागहरू उच्च मेमोरी र उच्च सुरक्षा चाहिने अनुप्रयोगहरूमा प्रयोग गरिन्छ। तिनीहरू प्राय: इलेक्ट्रोनिक टिकट, पहुँच नियन्त्रण, र पहिचान व्यवस्थापनमा प्रयोग गरिन्छ। - NFC प्रकार 5 ट्यागहरू टाइप 5 ट्यागहरूमा राम्रो डेटा भण्डारण र छिटो प्रसारण दरहरू तर्फ गियर गरिएको महत्त्वपूर्ण सुधारहरू छन्। तिनीहरू ISO 15693 मानकमा आधारित छन् र पढ्न/लेखन क्षमता छ। ट्यागहरू 256 सँग आउँछन् bytes / 896 bytes / 1280 bytes / 2528 byteको क्षमता। यो उच्च डाटा भण्डारण क्षमता लोयल्टी पोइन्टहरू, मेडिकल रेकर्डहरू, र अन्य बहुमूल्य जानकारीहरू भण्डारण गर्नको लागि आदर्श हो। ट्यागहरूसँग 53k को डाटा प्रसारण दर पनि छbits/s थप रूपमा, टाइप 5 NFC ट्यागहरू ICODE SLI-Xseries/TI 2K/ST LRI2K सँग उपयुक्त छन्। तिनीहरूसँग पढ्न-मात्र वा पढ्न/लेखन क्षमता छ र निकटता मार्केटिङ सहित अनुप्रयोगहरूको विस्तृत दायरामा प्रयोग गरिन्छ। तिनीहरूको बलियो डेटा सुरक्षा टकराव संयन्त्रहरूले तिनीहरूलाई अधिक मूल्यवान जानकारी भण्डारण गर्नको लागि आदर्श बनाउँछ। डाटा भ्रष्टाचारको जोखिम उल्लेखनीय रूपमा कम भएको छ, तिनीहरूलाई बजारमा सबैभन्दा भरपर्दो ट्यागहरू बनाउँछ। - NFC प्रकार 6 ट्यागहरू टाइप 6 ट्यागहरू ISO 14443A मापदण्डहरूमा आधारित छन् र पढ्न/लेख्न वा पढ्ने मात्र क्षमता छ। नवीनतम NFC ट्याग प्रविधि भएकोले, तिनीहरूले अघिल्लो प्रकारहरूमा धेरै सुधारहरू घमण्ड गर्छन्। उदाहरणका लागि, तिनीहरू 1K सँग आउँछन्byte/ 4Kbyte मेमोरी, जुन तिनीहरूका धेरैजसो पूर्ववर्तीहरू भन्दा उच्च छ। यद्यपि, डाटा प्रसारण दर अझै 106k छbits/s थप रूपमा, ट्यागहरूले उच्च सुरक्षा र डाटा टक्कर सुरक्षा संयन्त्रको घमण्ड गर्दछ। यसले तिनीहरूलाई सम्पर्करहित भुक्तानीहरू र अन्य अनुप्रयोगहरूको लागि आदर्श बनाउँछ जहाँ डेटा सुरक्षा सर्वोपरि छ। टाइप 6 ट्यागहरू M1 (S50 F08) सँग पनि मिल्दो छन् र धेरैजसो स्मार्टफोनहरूमा राम्रोसँग काम गर्छन्। तिनीहरूसँग पढ्न/लेख्न वा पढ्ने मात्र क्षमता छ। आदर्श फोरम प्रकार NFC ट्याग कसरी छनौट गर्ने? यी ट्यागहरूमा भिन्नताहरू डेटा द्वन्द्व संरक्षण संयन्त्र, डाटा प्रसारण दर, र मेमोरीमा छन्। तपाईको एप्लिकेसनमा निर्भर गर्दै, तपाईलाई विशिष्ट सुविधाहरू सहितको ट्याग चाहिन्छ। उदाहरणका लागि, यदि तपाईंलाई उच्च-डेटा सुरक्षा चाहिन्छ भने, तपाईंले टाइप 1 ट्यागहरू बेवास्ता गर्नुपर्छ किनभने तिनीहरूसँग कुनै टक्कर विरोधी संयन्त्र छैन। यद्यपि, यी ट्यागहरू सस्तो छन् र कम-सुरक्षा अनुप्रयोगहरूको लागि उत्तम विकल्प। तपाईंले जुनसुकै ट्याग रोज्नुहुन्छ, सुनिश्चित गर्नुहोस् कि यसले तपाइँको अनुप्रयोगको लागि आवश्यक सुविधाहरू प्रदान गर्दछ। यस तरिकाले, तपाईंले आफ्नो लगानीबाट अधिकतम लाभ लिनुहुनेछ। प्रासंगिक लेखहरू - 25 NFC कार्डहरूले तपाईंलाई NFC स्मार्ट कार्डहरूमा पुन: परिचय दिन्छ - तपाईको आफ्नै Amiibo NFC ट्याग कसरी बनाउने? - आईफोन र एन्ड्रोइड उपकरण संग NFC ट्याग कसरी कार्यक्रम गर्ने? - NFC बनाम RFID: तिनीहरू बीच के भिन्नता छ? - RFID र NFC ट्याग किचेनको सामग्री के हो? - NFC शुरुवातकर्ता गाइड: तपाईंले NFC बारे जान्न आवश्यक छ - RFID ट्याग को विभिन्न प्रकार के हो - आईफोनमा NFC कसरी प्रयोग गर्ने