From India payment systems circa 2006-7
1997 Market Research in Smart Cards
Ponders mobile payments Oct 07, 2007
http://andreae.com/Blog_Stuff/Interchange.pdf
Presentation-New-World-in-the-Cloud
Today we need to validation the cost figures and reset the sales and support targets to develop a new P&L. There is some wild geometry in the numbers that need to be reviewed.
Self-Sovereign Identity is solid thinking on the wider requirements