> No one said you can overdraw your account

False: The qz article I'm responding to says this.

"When you pull cash from an ATM or swipe your card at the coffee shop, the machine needs to determine the precise time that the transaction occurs to, for example, prevent it from being over-drawn."

Please please explain how this "over-drawn" situation occurs because of a GPS satellite.

> but if the clock is off on them vs the server they will fail, I have worked on a lot of payment systems.

False, CC terminal clocks do not need to be GPS time accurate. When the terminal connects to authenticate, they can update their time. There can be issues with authentication if clock skew is bad, but this requires normal levels of time sync (ie, NTP without GPS will be fine).