  Digital money is getting a lot of traction recently, a process which may
accelerate even more with the advent of Central Bank Digital Currency (CBDC).
Digital money has several disadvantages: Payments are difficult or outright
impossible in emergency situations such as the failure of the electricity grid
or Internet. CBDC may also be difficult to handle for children, the elderly, or
non-resident travelers.
  To overcome these problems, we design a cash-like CBDC experience. Our design
process has three stages: interviews, system design, and system tests. Based on
the interviews, we design and implement a CBDC component which is physical and
offline. We then test our system for usability.
  We discuss a spectrum of trust levels to allow for offline payments and argue
that our system can handle emergencies and exceptional situations for digital
payments.
