Not a blog, because a blog implies a cadence and we have no intention of publishing weekly. We would rather put out four things a year that somebody forwards to a colleague than forty that nobody finishes.
Mostly about the parts of payments that go wrong, since those are the parts we have spent the most time on and the parts nobody else writes down.
RSS8 minute read
Security
Safaricom does not sign its callbacks. What that means for every M-Pesa integration in Kenya, and why authenticating the endpoint is the smaller half.
Read it6 minute read
Engineering
0.1 plus 0.2 is not 0.3, and in a payments ledger that is not a curiosity. What goes wrong, and the one rule that removes the whole class of bug.
Read it7 minute read
Payments
The reconciliation problem from the point of view of the person who has to do it at month end, and why it is a bookkeeping problem rather than a payments one.
Read itIf there is a corner of Kenyan payments that nobody has documented properly and you keep having to explain it to people, tell us. That is the best brief we can get.