When you touch the sensing area above the router, a password-free Wi-Fi 'WAVLINK XXX-touch" will be valid for default 2 minutes, Of course, the effective time can be set according to your need

It is suitable for visiting guests,they could access the guest network without password.  In 2 minutes, Wi-Fi 'WAVLINK XXX-touch' can not be connected.
In addition, you can also turn off the touchlink as shown below