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When one device sends information to another device through wireless transmission technology, other nearby devices of the same type can receive wireless information. WiFi probe technology is based on this principle. Specifically, when the WiFi device is in the listening range of the WiFi probe and the WiFi device (whether it is a terminal, a router or other WiFi device) sends any frame, no matter who the probe is, the probe can intercept it. It also analyzes some information of this frame's MAC layer and physical layer, such as the MAC address, frame type, and signal strength of the sending and receiving devices. The WiFi probe does not need to have any interaction with the surrounding devices. It does not send out any WiFi signal itself. That is, the WiFi probe does not acquire the MAC information.
The network protocol used by the WIFI probe is the IEEE 802.11 protocol set. This protocol set contains many sub-protocols. Among them, the development in chronological order includes:
(1) 802.11a
(2) 802.11b
(3) 802.11g
(4)802.11n
In network communications, data is encapsulated into frames (a block of data in communications). When frames are transmitted at the data link layer, they are of a fixed format and can be transported without being packaged and packaged indiscriminately. The size is limited to a minimum of 46 bytes and a maximum of 1500 bytes.
1. Statistics and analysis of real-time passenger flow, mastering offline crowd data, providing merchants with valuable passenger flow data.
2. Use the probe data to dock with user information to achieve accurate offline marketing, such as crowd portraits.
3, public safety business, engineering, etc., as a supplement to urban security.
4, staff attendance, employee tracking, etc., enterprise attendance data accurate attendance, WiFi probe can help implement, such as automatic punch.
5, VIP customer reminder, such as help line guide shopping sales.
6, family care, family reminders and so on.
1. Massive acquisition: Wi-Fi probe has a wide coverage, can collect the MAC address in the range, at the same time data is not limited, Mac address can be massively collected.
2. Real-time data transmission: Wi-Fi probe can realize real-time data transmission, and monitoring data can be transmitted in real time;
3, identity matching: MAC address as the phone's unique identification code, with other data can achieve identity matching;
use:Safety warnings, regional heat maps, crowd trajectories, criminal detection, flow monitoring, etc.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.