Presence detection via Ping

[zzatihz1]

I'm in the process of updating my home network and was using this tool to detect presence of my mobile phone. Everything was working fine until I moved the Hubitat and other IoT devices to their own subnet. I thought this sensor would continue to work but alas, it does not. Traffic is blocked between my IoT VLAN and my secure VLAN. I created a firewall rule to allow Ping (ICMP) from the IoT VLAN to the secure VLAN and confirmed it working.

It looks like this sensor uses and HTTP call to determine presence. Have you thought about including a method to detect presence using Ping (ICMP)?