The key rings made in the company’s signature style, which also function as a Troika transport card, were produced as a limited series and went on sale on 2 July. Each item costs 300 roubles.

Passengers can use such key rings to pay for Aeroexpress journeys by placing them on the reader on the turnstile. It is possible to top up one’s account via the company’s ticket offices.

Key rings with a transport card chip make it possible to pay for rides via the underground metro and surface public transport, for access to city leisure venues, and also for some city services. Using Troika, for instance, one can purchase tickets to the Tretyakov Gallery, the Moscow Zoo, the Moscow Planetarium, the Museum of Soviet Slot Machines at Zaryadie, and also use it as a personal key to rent bicycles from Velobike. In winter, Troika cards can be used to pay for tickets to the skating rinks at Gorky Park, VDNH, and GUM.