The
Monedero card has been around for years, and is for use in the subtes (and some buses, trains etc – see
Medios de transporte). They are anonymous cash cards, so you get one (the card itself is free), load a cash credit onto them, and if you lose the card you lose the money. You used to be able to get them at the subte stations, but now you must go to a Monedero office to get one. That in itself might be an exercise as the Monedero site has an
empty page now where it used to have a list of offices for getting the cards. You could call them to ask where their offices are now. From memory, one was at Tribunales, next to one of the green D line subte .entrances. Once you have a Monedero card you can recharge it very many places (
puntos de recarga), including in the subte stations.
Centro de Atención al cliente
Capital y GBA: 0800-362-6663 (MONE)
[email protected]
The
Sube card is much more recent, and can be used on the subte, buses and trains (
RED Sube). This card is issued to you, and you must show your DNI or passport to get one. At first they were free but now I think they cost 10 pesos each for the card. You get the card here (
Centros de Obtencion), or you may still be able to order it over the internet. You recharge the cards in the same way as the Monedero card (
carga tu tarjeta), but if you lose the card and report it lost or stolen, your credit can be transferred to your new card. Each passenger must have a separate card – you are not supposed to swipe the card several times for several passengers travelling in a group (although rumour has it that this sometimes works, or worked). There are
many theories (and
here) as to why the government pushed everyone to get this card in a great hurry earlier this year, but it is clear that one reason was so that subsidies could be targeted at some point, when all of the general subsidy on BsAs transport has been lifted (ie because the card is attached to a DNI, all the people in a certain tax group could receive a subsidy, while others do not). At the moment, though, all people pay the same fare on buses, trains and subtes regardless of whether they pay by Sube, Monedero, or efectivo (cash).
Hope this helps.