Why does my ic water card brush my neighbor's house?

As the water card adopts RFID (Radio Frequency Intelligent Circuit Card), it is a non-contact automatic identification technology.

When your IC water card is close to a neighbor's water meter, the neighbor's water meter will send an electromagnetic RF signal to your water card to activate your water card, and then your water card will respond to the neighbor's water meter by changing the resistance value in the electromagnetic field, thus transmitting the stored information to the neighbor's water meter. So when your IC water card is close to the neighbor's water meter, the neighbor's water meter will read the relevant information of your IC water card and display the response. It should be noted that this reaction is electromagnetic induction, and information can be transmitted and read without physical contact. In addition, it is also widely used in property, public facilities and other fields, such as access control, parking, water and electricity management. So your IC water card may also be used on the neighbor's water meter.