 William O. Ruddick later founded Grassroots Economics Foundation and in 2013 developed the Bangla-Pesa model based on the results of Eco-Pesa, in the informal settlement of Bangladesh, Kenya.Grassroots Economics is working to employ mobile phone systems to trade community currency.The Bangla-Pesa uses a [mutual credit] model where there is no longer need for national currency or donor funds to keep it running.