nfc 物联网,nfc技术与物联网中的技术属于同一个类别

㈠What is the function of NFC and what are its usage scenarios

It is estimated that friends who pay more attention to mobile phones will find that many high-end flagship phones are equipped with a function called NFC. And use it as one of the phone's publicity stunts. However, we rarely encounter places where NFC must be used in our daily lives, so what exactly is NFC? What are its usage scenarios? How should it develop in the future? Below we will give you a good introduction.

What are the future development prospects of NFC? The biggest limitation on NFC now is the cost issue. This is not to say that NFC chips are too expensive, but that there are too few devices and scenarios that support NFC. For example, now everyone is very accustomed to mobile payment. Even vendors on the street have QR codes for Alipay and WeChat. They can be used by simply printing them and the cost is very low. What if this scenario is changed to NFC payment? Then these merchants need to buy at least one POS machine, and the cost is too high. If NFC wants to be as popular as mobile payment, a large number of B-end devices are necessary, which involves cost issues, otherwise merchants will have no interest in helping promote it. However, with the arrival of 5G, the Internet of Everything has become a future development trend. Coupled with the recent popularity of digital currencies, this is likely to bring about many revolutions in NFC technology. As long as the cost can be reduced, NFC will definitely become popular one day. Generally speaking, when buying a mobile phone, you don’t need to deliberately pursue NFC. At present, the symbolic significance of this function is greater than its practical significance, and it does not deserve too much attention.

㈡ What are the differences between blockchain and the Internet of Things

Internet of Things technology allows tangible objects used in daily life to be connected to the Internet , transmit data through algorithms and better serve customers. The most intuitive manifestation of the current rapid development of IoT technology is the proliferation of smart devices such as televisions, furniture, and vacuum cleaners. Currently, there are already smart homes that are entirely operated by built-in algorithms.

Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms.

The distributed nature of blockchain means it is resistant to most security issues. Blockchain systems’ advanced encryption provides better protection against hackers than traditional client-server systems. This is why online transactions using virtual currencies are very safe.

㈢ The role of blockchain in the field of Internet of Things

To reduce operating costs, blockchain technology focuses on transmitting data through point-to-point direct connection rather than through central processing device. To reduce security risks, the core problem of IoT security lies in the lack of original mutual trust mechanism between devices. Efficient and intelligent network operating mechanism, due to the decentralization and consensus mechanism of the blockchain, inOn the Internet of Things, cross-system data transmission will be transferred from the upper layer to the underlying blockchain.
The combination of blockchain technology and the Internet of Things can eliminate the audit and certification links between nodes, directly build a communication bridge for multiple parties, and improve network operation efficiency. At the same time, the decentralized consensus mechanism based on blockchain can also ensure the security and privacy of the Internet of Things and facilitate the transmission of real information. In view of this, blockchain and the Internet of Things will truly come together and play the strongest voice of the Internet of Everything.
Hongqiao Hi-Tech’s blockchain industry-specific application design uses the integrity and correlation of trusted transaction data to form a closed-loop self-certification capability for data on the chain. Used to verify the authenticity of digital documents and transaction records, and to track the origin of products and merchandise throughout the supply chain. This data proving product authenticity and origin is generally used by businesses and financial institutions in the assessment and processing of credit and loans.

㈣ Talking about technological changes - the evolution of artificial intelligence, the Internet of Things, and blockchain

I have read a lot of reports about blockchain recently and feel that blockchain is very popular. It has many similarities with the popularity of artificial intelligence and the Internet of Things. The following are some personal opinions:

1. The emergence of artificial intelligence, the Internet of Things, and blockchain are all human exploration of the future.

Human beings are a very peculiar group. There is always a group of people who will find an exit in our era, so that we can feel that society is functioning normally. Because of the explosion of technology, people's desire for innovation is unprecedented. Regardless of the outcome, the starting point of these desires is always good.

On the one hand, the popularity of artificial intelligence is due to the development of these three aspects, which we often call deep learning, big data, and computing power; on the other hand, the Internet has been developing for decades and requires new technologies. Things emerge to take over the consequences of the development of the Internet, such as big data and some inefficient Internet mechanisms. The Internet has been developing for so many years, and during this period we can also see some new things being invented or mentioned, such as the Internet of Things. However, it gradually faded over time. At the beginning, when the Internet of Things appeared, many people thought that the Internet of Things was the next exit for mankind after the Internet. Later, many problems emerged, such as limitations in data processing capabilities and limitations in sensor intelligence, and the Internet of Things was gradually marginalized. Then came the emergence of solutions to problems in the development of the Internet of Things - artificial intelligence.

Overall, the development of these technologies has either been truly successful, or it has led to some new problems, and the solutions to these new problems have formed new technologies. This reminds me of what Mr. Wang Qiang of ZhenFund said: It is the questions, not the answers, that change the world.

After so many years of development of human society, there is always a problem that needs to be solved, and that is decentralization. One point worth explaining is that blocksThe chain is not completely decentralized, but only improves efficiency, which also has costs. Many media reports today are misleading in themselves.

2. Who is the next exit between blockchain and the Internet of Things?

The author believes that the Internet of Things is the next exit for mankind. Compared with blockchain, the Internet of Things is more likely to become a new outlet, because the previous wave gave it certain advantages in policy, and compared with the Internet, the Internet of Things is a decentralized network. Here is an explanation of what a decentralized network is. The Internet is a platform-centric network. Communication between people must be concentrated on a platform. This platform is what we often call a trust mechanism. The Internet of Things is a decentralized network. Sensor devices self-organize into a network, and this network node is no longer an enterprise or a platform. In other words, the platform distributes and optimizes centralized rights, making each node possible to become the center.

As for the blockchain, the decentralization that its core technology demands is still too urgent. However, in some fields, this kind of decentralization demand is still welcome, such as finance, house leasing and other business needs that are suitable for the p2p model. The author believes that the biggest reason why the next exit is the Internet of Things is that compared to the blockchain, the decentralization of the Internet of Things is softer.

3. Artificial intelligence, the Internet of Things, and blockchain will eventually be applied to life.

This sentence may sound a bit nonsense. However, the premise that technology can be applied to life is that the technology itself can solve a series of problems that exist in life. From an economic point of view, all technologies revolve around two words: efficiency. No matter how people view artificial intelligence, the Internet of Things, and blockchain today, one thing is certain: existence is value.

As for the time dimension, we can feel or see that after more than a year of hype, artificial intelligence is gradually being implemented in the industry. Personally, 2018 should be the first year for artificial intelligence to embrace the industry. On the one hand, technology companies and traditional companies are also actively cooperating. On the other hand, new media related to artificial intelligence are also promoting the implementation of artificial intelligence, such as: New Wisdom.

Needless to say about the Internet of Things, the previous government also favored the Internet of Things in policy formulation and related planning. Moreover, in the past few years, commercial applications of the Internet of Things have been developing well. But, it's not as good as I thought before. I believe that with the cooperation of artificial intelligence, the Internet of Things industry will develop rapidly in the future.

For blockchain, it may take a long time to get rid of the bubble. Today’s blockchain bubble is too serious. In addition to market bubbles, blockchain also has to face very severe challenges. Regulation, these issues will take a long time to resolve. Personally, I think it will take longer for blockchain to be implemented in the industry than artificial intelligence. As for many companies today, it is better to concentrate on doing things than to join in the fun. When supervision is unclear, problems are prone to arise in joining the heat.

㈤ What exactly is blockchain? Which blockchains have physical applications

What is blockchain?

Official definition: Blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission consensus mechanism encryption algorithm, etc. The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system.

Vernacular understanding: A block is to package all the data generated within a time period in chronological order. Generally, the length of a block is 10 minutes, which means that within 10 minutes, all the data on the Internet will The data is packed into a complete package, and this complete data package is called a block. The blockchain links these data packages in order to form a structure, and cryptographically ensures that it cannot be tampered with or forged to form a distribution. ledger, this is the blockchain.

It seems that everyone has a preliminary knowledge and understanding of the blockchain. So whether the blockchain has any practical application in daily life, the answer is yes, the current practical application There are mainly the following aspects. Of course, I may not know some of them. Friends are welcome to leave messages to add.

Financial Industry

Blockchain should be used the most in the financial industry.

For example, in May 2017, OMG (Omise Coin) announced that it would cooperate with Alipay to launch an e-wallet, integrating the "Alipay" payment solution into its own payment service suite to help local electronics in Thailand. Business merchants accept online payment transactions from Chinese tourists.

Another example is PPT, which is a financial transaction system for bills based on blockchain.

Gaming

The gambling industry entered the blockchain probably last year. Why does gambling favor blockchain? Because blockchain provides a relatively fair betting system. Why? It is relatively fair. As can be seen from the previous introduction, the blockchain cannot be tampered with or forged.

For example, WICC (WikiChain) can realize rich application scenarios such as asset issuance, betting applications, copyright traceability, mutual insurance, decentralized exchanges, and cross-border settlement.

For example, the STX (King of Fighters Token) stox application is designed to provide the full functionality of a prediction market application without the need for any central server. Prediction markets require functions such as event planning, market production, providing information and analysis to traders, reporting event results, and of course collection and payment.

I believe that if the current lottery industry is built on the blockchain, people will become more and more enthusiastic about buying, because there are too many insider tips that make people give up.

Internet of Things

There are still many applications of the Internet of Things on the blockchain, becauseThe traceability and immediacy of blocks are well suited to this industry.

For example, DATA is the concept of the Internet of Things. It is a decentralized p2p network. Data sources can connect to any node in the entire network, then publish data, and the network will immediately send it to subscribers. Achieve horizontal scalability through sharding pattern. This timeliness and accuracy are very important in IoT applications.

Game industry

For example, GTC (G coin) is a decentralized digital asset based on Ethereum erc20 issued by Game Global. G coin is committed to becoming a universal number in the global game industry. Monetary standards.

For example, MANA is a distributed shared virtual platform. On this platform, users can browse and discover content and interact with other people and entities. Users can also claim ownership of virtual territories through a blockchain-based land ledger. The territory is demarcated by rectangular coordinates (x, y), and its owner can decide the content published on the territory, including static 3D scenes to interactive systems such as games.

There are many other industries. The emperor did not list them one by one, but listed a few representative ones. What is the purpose? It shows that the blockchain is definitely not just a currency transaction, it is a real implementation project, and it is a product of the changes of the times with real practical uses.

The development of human society is actually like the blockchain, it is irreversible and unstoppable. As far as I feel, the blockchain will enter thousands of households sooner or later. Regardless of whether it is bull or bear, hold it in your hands. Value coins and Flush have started quoting digital currencies, which shows that society is accepting it step by step. The power of social development cannot be blocked by any country or person.