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Valve has implemented a new proof-of-age verification system for Steam users in Australia, but unlike PlayStation and Xbox, which offer multiple verification methods, Steam will only accept ownership of an actual credit card. This also applies to purchasing R18+ rated games, meaning users with only debit cards are locked out. Critics have pointed out that roughly half of Australian consumers don't own a credit card, effectively barring a large portion of adults from verifying their age or buying mature-rated titles on the platform, drawing comparisons to more flexible systems used by rival console makers.