POS system was first used in retail industry, and then gradually extended to other service industries, such as finance and hotels. The application scope of POS system also ranges from enterprise internal expansion to the whole supply chain.
Extended data:
Safety precautions:
1, firewall
Firewall is the most basic configuration of network security control, and it is also an important barrier to form a secure network. Firewall can greatly improve the security of internal network, which is used to protect trusted network from the threat of untrusted network.
At the same time, it allows both parties to communicate and reduce risks by filtering unsafe services. Using technical means such as router mutual authentication and address translation can effectively prevent counterfeit routers from accessing and illegally intercepting data.
2. Network security
At present, the GPRS transmission coding methods are CS- 1 and CS-2, which have encryption protection for transmission data, so the GPRS channel itself is safe.
GPRS wireless POS system can use VPN or SDH technology to establish a virtual private network of POS system on the mobile data public network, so that wireless POS machines scattered all over the country can safely access the bank POS host and internal network resources, and ensure the reliability and security of wireless access network of POS system.
3. Terminal confidentiality
Every wireless POS terminal is equipped with GPRS SIM card. Using the uniqueness of SIM card, users can access a certain system, which can effectively avoid illegal intrusion. The wireless POS master key is encrypted and saved by a special security CPU to ensure the security of the master key.
Baidu encyclopedia -POS system