We have been steadily working on the guest network for the past couple of sprints. There's still a show stopping WIFI driver bug to kill before we are confident this feature can be released to customers. We are working with our chipset vendor to resolve it.
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Hi,
Thanks for your interest and feedback. The guest wifi is on our roadmap. Unfortunately I cannot give specifics on when that feature will be available.
Highlighting these usecases like you have helps our discussion when prioritizing our features.
Best Regards:
Simo / SENSE QA Lead
the wifi password is not stored locally, for my convenience
the server is in China 
https://www.yeelight.com
I still have 4 bulbs lying around
The guest network is currently under work, should become available in a near future update.
Another question: I have the confirmation from the manufacturer of one of my devices that they won‘t issues an update for the KRACK vulnerability.
that would be another use case for a guest wifi
What should I say...
Apologies for the delay,
We have been steadily working on the guest network for the past couple of sprints. There's still a show stopping WIFI driver bug to kill before we are confident this feature can be released to customers. We are working with our chipset vendor to resolve it.
Joining this thread... Guest wifi would be very welcomed feature. Any news on this?
It will be available this year, but no specific time or month has been said.