Let's set the Wi-Fi SSID in an easy-to-understand manner (ASUS "RT-AC59U" edition)

Wi-Fi can use the 2.4GHz band and 5GHz band, but for smartphones, let's mainly use the 5GHz band, which enables faster communication. It is convenient to use "xxx_5g" etc. for the 5GHz band and 2.4GHz band SSID so that the frequency band of the SSID can be identified. The low-speed 2.4GHz band should be considered for Wi-Fi handsets that do not support the 5GHz band.

If you add a symbol or number to the beginning of the SSID name, it will be easier to see at the beginning of the list when selecting a Wi-Fi connection destination. Japanese can be used for the SSID name, but basically it is safer to use only half-width alphanumerical characters.

The SSID name of the Wi-Fi router is automatically collected by location information services such as Google, and the SSID and MAC address of the home Wi-Fi are registered via a smartphone or the like. By doing this, if you try to connect from your smartphone to your home Wi-Fi router while you are at home, it will be detected accurately, but if you do not want to register the SSID name and password with Google services, the end of the SSID Just add "_nomap" to.

Knowing the above, you will find that continuing to use the initial SSID is not only a problem if you have duplicate SSIDs, but also if you transfer a Wi-Fi router that you no longer use. The initial SSID of RT-AC59U is a simple name "ASUS_08", so it is especially easy to batting. Be sure to change it and use it.

It is recommended to turn off the "Hide SSID" item in the settings. If you turn this on, you will not be able to select the SSID from the list, and you will have to enter the SSID name correctly when connecting.

In addition, it seems to be good at first glance considering security because it will not be visible in the search of the smartphone, but this setting is not safe at all. The SSID seems to be completely concealed, and it can be easily seen using a tool, and once connected, the smartphone always sends out radio waves that always search for the corresponding stealth SSID, and on the go It is rather dangerous because the SSID of your home will be scattered around.