The Open Access Button has mapped over 7500 paywalls! Button 2.0 Crowdfunding On April 22, we launched an Indiegogo campaign to crowdfund Button 2.0! We’re seeking to raise £20,000 to support the development of Button 2.0. Button 2.0 has been reimagined from the ground up to make it a true game changer. We’ve focused on creating ways to connect people with the research they need and use research in completely different ways.