The ring has all the functions of the Troika card and can be used to pay transport fares, including the Moscow Metro, Moscow Central Circle, and ground transportation.
The ring is made of durable ceramics and available in different colours, including black, white and pink. There are three sizes available: 17, 19 and 21.
You can purchase the ring at Moscow Metro souvenir shops found in locations listed here: http://www.mosmetro.ru/info/infostand/
You can top up the ring the following ways:
- Give your ring to a cashier at any metro station.
- Remote topping-up is available via the Troika partners network, including Svyaznoy and Evroset outlets, Elecsnet self-service terminals, OAO Central PPK terminals and cash desks, etc. The full list of locations where you can top up the transport card is available on the Moscow Transport portal.
- Using the Moscow Metro app (if your mobile phone supports the NFC technology)
To pay a transport fare, hold your hand with the ring close to a ticket barrier (the yellow reader on it) found in metro stations, MCC, and ground transportation.
The ring surface must be parallel to the reader. Hold your hand close to it for a couple of second to let the device connect to it. The payment will be made automatically.
It is not recommended that one wears the Troika app ring and some other metal ring on the same finger, as it can lead to device failure. The ring is waterproof. You should avoid exposing the Troika app ring to corrosive liquids, such as solvents, sanitizers, etc. Avoid exposing the ring to strong magnetic or electromagnetic fields.