A U.S. federal appeals court has revived a proposed class action lawsuit against Shopify, allowing the company to be sued in California over allegations of unauthorized data tracking. The Ninth Circuit en banc panel ruled 10-1 that Shopify installed tracking software on customers' phones without their consent by embedding payment-processing code on merchant websites, which allegedly tracked consumers' locations and collected personal data. This decision reverses an earlier ruling that had dismissed the case on jurisdictional grounds and could set a precedent making it easier for American courts to assert jurisdiction over internet-based platforms. Following the ruling, Shopify's shares rose 1.6% in pre-market trading.