Shulou(Shulou.com)11/24 Report--

Author | ByArsT

On the magical App of Little Red Book, there are always some popular gadgets inexplicably.

Image source: from the Internet some time ago, the NFC music wall on Xiao Hongshu became popular, and you can see the production process in the videos shared by users: first print a music playback interface, then mount it, stick a NFC sticker on the back to write data, and multiple frames are combined to form a complete music wall.

Image source: from Little Red Book in this series of simple operations, the highest threshold is not to buy a NFC tag (after all, a few cents per e-commerce platform), but to write web data in the NFC tag to achieve the effect of displaying the playback interface.

NFC stickers, also known as NFC tags, belong to applications that are relatively close to the masses of the people in short-range wireless communication technology. For example, the NFC function on our mobile phone is to exchange data when two NFC devices are close to each other. Electronic payment, access card simulation, bus card, these are the landing mode of this technology.

Image source: from the network, the NFC tag is a NFC device that can not communicate with the Internet and rewrite real-time data, but it also has the ability of near-field communication. For example, our common access card is a NFC tag, but it is mounted in a shell.

Although NFC tags can not overwrite data in real time, it allows users to actively write and modify data, which means that NFC tags have more ways to play, far more than the low-level application mode of NFC music wall.

For example, a NFC sticker with a Wi-Fi password is written in. When a friend enters the door, you can automatically get the WIFI password by using the mobile phone close to the sticker; link the NFC tag with the smart home switch, and as long as the mobile phone is close to the NFC tag, you can automatically turn on the lamp, air conditioner, and so on.

Photo Source: Xiaomi launched "NFC touch paste" before Playplay ByArsT, linking it with Mi's smart home, which is currently the most popular manufacturer of NFC applications in the industry. However, it is a bit confusing that Xiaomi's launch of NFC touch stickers has not caused waves in the smart home field, but no one is interested.

And why is that?

As the old saying goes, true knowledge comes from practice. Just recently, I bought a lot of smart appliances at home, and sometimes I always have to look for the switch step by step in my mobile phone, which is really troublesome. I specially bought more than a hundred NFC tags to see what the practical value of this thing is.

This is the gadget, cheap a few cents a picture source: play ByArsT camera but need to pay attention when buying, NFC chip has different models, the more common models are NTAG 213,215,215,216.Although there is no difference in function, there is still a big gap in capacity.

The memory size of NTAG 213 is 137 bytes, that of NTAG 215 is 492 bytes, and that of NTAG 216 is 868 bytes. The specific response is to write more or less, if you simply make a switch or write a link, NTAG 215is enough, but if you want to write more content, it is best to buy the NTAG 216model.

Image source: thanks to the achievements of mobile phone manufacturers in automation, the intelligent implementation of NFC can be roughly divided into three categories.

First, write the data directly in the NFC tag, so that the phone can read the data directly after it is close to the NFC tag. This is the most primitive function of the NFC tag application, through software on the phone (such as NFC Tools) to write data in NFC tags, such as Bluetooth connection, Wi-Fi password, web URL, phone information, and even the home pages of Wechat, QQ, Facebook, can be written into the NFC tag, when others scan the tag can open the corresponding content.

Image source: game ByArsT is worth mentioning that this writing method does not support automated logic, what is written is another level of "WYSIWYG"; and this function also requires device support. For example, the Wi-Fi auto connection feature only supports Android devices, not iOS.

Moreover, this kind of writing is not random, there is a certain capacity limit, for example, it takes 116bytes for me to write a location information, which is why I just recommended NTAG 216.

Image source: game ByArsT the second need intelligent App, the current mainstream smart home platform Mijia supports through the NFC tag to trigger automation.

If you want to make good use of the automation features of NFC tags, you need to understand the logic of automation on App.

For example, if I want to turn on the TV while turning down the volume, the curtains are turned off, and all the lights in the house are on, I need to set up such an automated logic in Mi's App: when I turn on the TV, automatically trigger the curtains and lights switch, and adjust the TV volume to 20%.

Picture source: play ByArsT this is also the general logic of smart home automation, this is also the logical thinking of "if-or" in programming, if. Or... as long as you are proficient in this set of logic, then the smart home will have more ways to play.

The function of NFC tag is to add a trigger switch on this basis, such as affixing a NFC tag on the head of the bed, the linkage content is to automatically close the curtains and turn off all lights and turn on night lights, the addition of NFC tag will simplify the step that we open the phone to trigger.

In my opinion, the third function is not necessarily strongly related to smart home, and it is also the most playable way to play, which requires iOS devices to achieve certain functions.

First of all, many friends must have heard of the quick command function of iOS, but what many friends may not know is that this function can be triggered by the NFC tag. For example, when the NFC tag is scanned, a music App; is automatically opened or when the NFC tag is scanned, it automatically navigates to a place; after scanning the NFC tag on the desktop, it automatically opens the nail to sign in.

Image source: these functions of Playplay ByArsT are based on the powerful functional instructions of iOS shortcut instructions, which can make the functions that previously require tedious clicking on the screen to be realized with a click, and these functions are not limited to intelligent devices, but functions on all mobile phones. On the other hand, this method only writes a trigger switch, so there is no restriction on the NFC model, so it is more suitable to paste it in some unimportant places.

Touch and open the Apple TV remote control source: play ByArsT with these tools and features, if you have enough ideas and ideas, you can make your life more intelligent. However, it should be noted that through the automation of the App and iOS shortcut commands of Mijia, you need to have the corresponding instructions on the device, and if you want to use other mobile phones, you need to log in to Mijia App or iOS shortcut instructions to be feasible.

From the birth of the NFC function to now, there have been many ways to play, such as Huawei's touch pass, intelligent device touch to open the interface, and so on. But in fact, there is no reason why NFC tags have been widely promoted so far. A large part of it lies in his study cost.

Both the automation of mobile phones and the interaction between devices of intelligent manufacturers require a certain degree of logical thinking, that is, the "if-or" we mentioned just now.

Touch to quickly open the recording source: game ByArsT consumers need to understand, when scanning NFC tags in what premise to open, if does not meet the requirements of automation and how to do, the logic of which requires a certain thinking or even a certain threshold.

Even if you understand this, the second problem is how many phones NFC tags can support and a large number of people will be dissuaded.

Image source: play ByArsT is precisely because of this, NFC function is only suitable for a small number of consumers. For the vast majority of consumers, NFC features are not only chicken ribs, but also troublesome.

In fact, I bought a lot of NFC tags, but I was exhausted when I created NFC tag content. So that although the NFC feature has the ability to rewrite, I don't have the energy to continue to modify it.

This is how we feel after the experience of our fussy digital bloggers, not to mention ordinary consumers.

This article comes from the official account of Wechat: non-objective Laboratory (ID:zhinan617).

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