The Steam client contains a digital storefront called Steam Store, which allows users to purchase video games. Once the game is purchased, a software license is permanently connected to the user`s Steam account so that they can download the software to any compatible device. Gaming licenses can be granted to other accounts under certain conditions. The content is provided by an international network of servers with a proprietary file transfer protocol.  Steam sells its products in U.S. and Canadian dollars, euro, pound sterling, Brazilian reais, Russian ruble, Indonesian rupee and Indian rupees depending on the location of the user.  In December 2010, the customer began supporting the WebMoney payment system, which is popular in many European, Middle Eastern and Asian countries.  From April 2016 to December 2017, Steam accepted bitcoin payments with transactions processed by BitPay before BitPay support fell due to high value fluctuations and costly service charges.   The Steam Storefront verifies the user`s region; Game purchases may be limited to certain regions due to release dates, game rankings or agreements with publishers. Since 2010, the Steam Translation Server project has provided Steam users with support for Steam customer translation, storefront and a selected library of Steam games for 27 languages.
 Steam also allows users to purchase downloadable content for games and for certain games like Team Fortress 2, the ability to purchase inventory items in the game. In February 2015, Steam began opening similar options for buying in-game items for third-party games.  In accordance with its acceptable usage policy, Valve reserves the right to block customers` access to their Steam games and services if Valve`s anti-cheat software (VAC) finds that the user cheats in multiplayer games, sells accounts to others or acts to exploit regional price differences.  Blocking these users initially removed access to its other games, resulting in the loss of access to some users with high-quality accounts due to minor infractions.  Valve then changed its policy to resemble Electronic Arts` Origin platform, where blocked users can continue to access their games, but are very limited, are limited to offline playing and cannot participate in Steam community functions.  Customers also lose access to their game and Steam account if they refuse to change Steam`s end-user licensing agreements; This last happened in August 2012.  In April 2015, Valve allowed developers to block players from their games, but adopted at Steam level, allowing them to customizablely query their own gaming communities.  Valve also added the ability for publishers to rent and sell digital films on the service, most of which were first video game documentaries.  After Warner Bros. Entertainment offered the Mad Max movies in addition to the release of the game in September 2015 based on the series, Lionsgate entered into an agreement with Valve to lease more than a hundred feature films from its catalog from April 2016 on Steam, and other films followed later.  In March 2017, Crunchyroll began buying or renting several anime on Steam.
 However, in February 2019, Valve closed videos from its storefront that contain only videos related to game content.  Although available, users can also purchase steam Machine-related hardware.  Although Steam provides direct sales data to the developer and publisher of a game, it does not provide public sales data or such data to third-party sales groups such as NPD Group.