Keep the change. The British capital has unveiled a new cashless payment system for the city’s street performers. The collaboration between Busk In London, a performers’ association, and Swedish payments company iZettle was launched last weekend by Mayor Sadiq Khan, and features contactless terminals passersby can simply tap to donate an amount predetermined by the performer. “Now, more Londoners will be able to show their support to the capital’s brilliant, talented street performers,” Khan said in a statement. Still, some worry it’ll leave the homeless and other disadvantaged in the lurch.