the line letter, Bb and Cc. From 1989 to 1993, they got ordinary line letters. Then, they switched to a system with a subordinate "+", A +, B + and H +. This system was dropped in 2007 with the introduction of 10-minute operation on the key daytime lines. Stations Of the 86 stations, 32 are located within the central ticket fare zones 1 and 2. Another 35 stations are located within the Copenhagen Urban area. Therefore, just 17 stations can be said to be located in suburbs. Forty-six stations are elevated, twenty-one are street level, fifteen are below street, 4 have different levels and one is underground. Within the city core (zones 1 & 2) the stations are either elevated or lower than the street level. Most stations consist of two tracks, each with its own side platform or an upper platform in between. At terminals and hubs, however, there may be several tracks and platforms depending on local conditions. Older stations are often designed with a station building where there used to be ticket sales, but after the 1970s gradually moved to unmanned stations with ticket machines, the design of new stations has typically become simpler. There are still kiosks with the possibility of buying tickets at some stations, but in a number of cases, the old ticket sales outlets have been re- purposed, or the buildings have been demolished. At most of the termini other types of train are available for travel to the more remote towns in the metropolitan area (L-tog, diesel-powered local trains) or to the rest of Zealand and the other islands between the Great Belt and Øresund (regionaltog, regional trains). Trains across Øresund to Scania and its main city, Malmö, connect with the S-train network in the city centre. Facilities Free Wi-Fi Internet access was available in the S-train system. It was shut off on Jan 1st 2020 due to not being popular. Ticketing The S-tog along with buses, regional trains, and Copenhagen metro uses Rejsekort, an electronic ticketing system across Denmark. Passengers can also buy paper single-trip tickets at ticket vending machines with cash or Credit Cards or at 7-Eleven kiosks at the train and metro stations or with the 'DOT Tickets' iOS or Android app. The city is divided into travel zones, and the price of a journey depends on how many journeys are travelled through (minimum 2 zones). The price