I like the ease and convenience of the three payment systems mentioned in Tim O’Reilly’s article: being able to consume effortlessly is great, and it works a little bit that way with the Auto-Top-Up Octopus card in Hong Kong.
I don’t have personal concerns about potential fraud and privacy that are often raised on these schemes (there are other avenues for that that are likely to be more lucrative).
What does concern me is that businesses are willing to invest money in these schemes because they get money into a business more effectively and in greater volume. Other rewirings of business transactions for my convenience may not do the same, and most likely won’t attract the same investment.