Google has “Find My Device” feature in android to detect bluetooth tags. It would be nice addition to Ruuvi tag to have ability to locate it based on this feature.
Nordic Semiconductors seems to support it, so it should be possible in theory at least 
The SOC used in ruuvi (nRF52832) is not listed as supporting this.
It is there, click “See all +” to expand the view.
Find my Device support is in nRF Connect SDK, which is the new Zephyr-based SDK. RuuviTag code is based on nRF5 SDK, which has not received updates in a while.
Implementing this support would mean rewriting entire RuuviTag code, but we’ll keep this in mind if we ever port to new SDK/Zephyr
nRF5 SDK seems to be in maintenance mode, so it will not be updated: nRF Connect SDK and nRF5 SDK statement - Blogs - Nordic Blog - Nordic DevZone
Too bad, waiting for full rewrite X)