Asus has debuted its new Instant Guard facility in the new RT-AX68U Wi-Fi 6 home router. The device also sprouts 3x3 MIMO antennae for speeds of up to 2.7 gigabits per second (Gb/s). It also supports the OEM's AiMesh software, so as to integrate into and proliferate any such network it finds itself in.
https://www.notebookcheck.net/The-RT-AX68U-is-the-first-Asus-Wi-Fi-6-router-to-feature-the-new-Instant-Guard-security-app.514871.0.html
This actually came out a couple months ago on older generation Asus routers. This isn't new