Instant Guard is a feature based on VPN feature of ASUS Router and only available for netowork manager(s) now.
Use the Instant Guard app when you're connecting to a public Wi-Fi. Tap to shield as safe as you are using your network at home - ensuring your privacy and financial credentials protected. With Instant Guard you can easily access to your ASUS router at home while you are away and keep 100% anonymous while you are browsing the web or chating with Virtual Private Network (VPN) connection. In the future this feature will allow network managers to share VPN connection permissions to friends or family members.

Key Feature :

1.One-Tap Operation
2.Ensure a secured and encrypted connection
3.Surf the Internet Anonymously
4.Change your IP Address and Location

Instant Guard app supports the following ASUS routers:
-RT-AC86U
-RT-AX92U
-RT-AX88U
-RT-AX68U