This month I spoke to Stefan Jeschonneck, Co-founder of SumUp. SumUp is a great example of Ecosystem Economics in action within the realm of financial services, offering a digital, disruptive solution to payments. SumUp empowers any business or sole trader to accept debit and credit card payments securely, using a smartphone and their portable card reader. With recent investment from American Express and daily deals company Groupon, I ask Stefan to share how his entrepreneurial journey began and to reveal his plans for the future.