Comment by Kavu

I did not dig up for a detailed technical write up, but have a plenty media sites mentions (sorry for original Russian content):

Just news, mentioning this, back to 2016 https://lenta.ru/articles/2016/11/07/gpsoff/

Nice write up, also from 2016 https://meduza.io/feature/2016/10/19/teleportatsiya-iz-kreml...

News from Jan, 2018 https://snob.ru/news/156463

Nov, 2018 https://www.vedomosti.ru/politics/news/2018/11/12/786188-kre...

Hope that helps!

P.S. And yes, I personally see this behaviour near Kremlin. It's almost impossible to order a taxi nearby.