Labels can be divided into their existing forms

1. Physical label The physical label is a brief label used to indicate the name, weight, volume, and purpose of the item. There are traditional print labels and modern barcode print labels.
Application scope:
Packaging: Taro labels, postal parcels, letter packages, shipping goods labels, envelope address labels.
Electrical appliances: mobile phone internal labels, various electrical appliances labels, laptop labels, and electromechanical product labels.
Products: price tags, product description tags, shelf labels, bar code labels, and drug labels.
Management: book labels, vehicle inspection labels, security labels, property labels.
Office: document document labels, file preservation labels, various items and stationery labels.
Production: labeling of raw materials, labeling of processed products, labeling of finished products, inventory management labels.
Chemicals: Marking of paint materials, marking of gasoline engine oil products, and marking of various special solvent products.
Others: Anti-counterfeiting labels, encryption labels, security labels.
Jewelry: Labels for jewellery tags, tags that are not easily affixed to the product.
Clothing: clothing tag, washed labels.
Airport: Boarding pass, baggage tag.
Tickets: train tickets, coach tickets.
Others: parking tickets, highway toll tickets.
2. Network Tag Network Tag is an Internet content organization method. It is a highly relevant keyword. It helps people easily describe and classify content for easy retrieval and sharing. Tag has become an important element of web 2.0. .
The label decentralizes the organization rights of content from the website administrator to the user, fully embodies the features of web2.0 from the bottom up, and the user participation.
If you visit Flickr (pictures), Technorati (blogs), and other web 2.0 sites will find that the site uses tags to display content. Users use tags to describe content and retrieve related content.
The "open classification" used by Baidu Encyclopedia is also a manifestation of the label.
3. Electronic tag electronic tags, also known as radio frequency tags, transponders, data carriers; readers also known as read devices, scanners, read heads, communicators, readers (depending on whether the electronic tags can wirelessly rewrite data). Between the electronic tag and the reader, a coupling element is used to achieve spatial (non-contact) coupling of the RF signal; within the coupling channel, energy transfer and data exchange are realized according to the timing relationship.
An electronic tag is a tool that increases the efficiency and accuracy of recognition, and it will completely replace bar codes. RFID radio frequency identification is a non-contact automatic identification technology. It automatically identifies target objects and obtains relevant data through radio frequency signals. The identification work can work in various harsh environments without manual intervention. RFID technology can identify high-speed moving objects and can identify multiple labels at the same time. The operation is quick and easy.
RFID tag is a breakthrough technology first, it can identify a single very specific object, instead of identifying only one type of object like a bar code.
Second, it uses radio frequency radios to read data through external materials, and bar codes must rely on lasers to read information;
Third, multiple objects can be read at the same time, and bar codes can only be read one by one.
In addition, the amount of information stored is also very large.