It needs to be "cash-like". It needs to be as convenient, safe and trusted as cash, though digital in nature. A CBDC must be construed as a type of payment instrument to be made available to one and all. Hence, it should be working just as efficiently as any other existing mode of payment.
Otherwise, adoption and acceptance of the CBDC will become very complex. This is particularly more pronounced in countries with well-established payments systems as end-users may have little motivation to switch to another payment mode. It goes without saying that Industry buy-in and the public's trust are very critical in the CBDC experimentation. As a matter of fact, the success of CBDCs hinges on awareness.