Remote access to the Home Assistant software requires internet access and a $5/month subscription to Nabu Casa, a non-profit that maintains the Home Assistant code and provides the network security and privacy management for connecting with Amazon and Google cloud services.
It is possible to program your way around using Nabu Casa’s cloud service, but there is no easier way to add remote access to Home Assistant or integrate with Alexa or OK Google. and popular voice commands to Home Assistant, as well as bring Home Assistant devices to those services.
Once you visit Nabu Casa, click login. Use your Nabu Casa email and home assistant account.
Within the user interface, find the remote access login and click connect.
You now have access to Home Assistant.