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EAS system consists of soft label system and hard label system
1. Soft label system: It consists of a detection antenna (composed of a transmitter and a receiver), a decoder, and a soft label. When using a soft label on a product, the purpose of product protection can be achieved. When someone attempts to steal the tagged goods, after the goods pass the detection channel, the detection antenna detects the tag signal on the goods, and at the same time sends an alarm sound to promptly alert the security personnel so as to achieve the theft prevention purpose. Upon normal purchase, the salesperson will decode the anti-theft tag after checkout and the customer can pass it "safely." The soft label system is mainly used in shopping malls such as books, audio and video products, detergents, stationery, etc., and soft labels are used once.
2. Hard tag system: It is composed of detecting antenna, unlocking device and all kinds of hard tags. When using the hard tag on the goods (can not be removed by hand), after the customer pays, the salesperson removes the hard tag with the unlocker, otherwise when the goods with the hard tag pass the detection area of ​​the detection antenna, it will also sound an alarm. . Hard tag system is widely used in various types of clothing, shoes and hats stores and specialty stores. Hard tags can be used repeatedly.
Electronic anti-theft alarm system overview
With the development of science and technology and the quest for efficiency, today's traditional theft prevention methods of retail stores using human power to monitor shopping malls are no longer appropriate. Instead, high-tech electronic goods theft protection systems will be used instead.
The theft of retail merchandise is a worldwide problem. According to statistics from abroad, the loss of a US$9.44 worth of goods requires US$849 in turnover to recover losses. The loss of commodities undoubtedly aggravated the burden on the company. For this reason, loss prevention has gradually become the focus of domestic business leaders.
As early as the late 1960s, the United States had the first electronic article surveillance (EAS) electronic article surveillance (Electronic Article Surveillance). Fundamentally changed all previous anti-theft measures aimed at customer monitoring. The implementation of anti-theft surveillance on commodities prevents consumer resistance and this anti-theft deterrence has been agreed by many retailers. At present, most large-scale retail companies in the world use electronic anti-theft devices. The installation rate of EAS systems that entered the Asian countries 10 years ago, Japan, Singapore, South Korea, and Hong Kong and Taiwan has increased year by year. After Chinese enterprises accepted electronic anti-theft systems in the 1990s, they began to install EAS systems in shopping malls in Beijing, Shanghai, Guangzhou, and Shenzhen. 
The principle of electronic anti-theft system
EAS (Electronic Article Surveillance, EAS for short) attaches an electronic anti-theft tag to small, high-value, easily stolen goods. There is a check gate at the exit of the shopping mall. When a thief steals it with a label. The merchandise will be alerted immediately by checking the door (like the boarding check at the entrance of the airport), and normal shopping will invalidate the label when passing through the checkout counter and will not alarm.