Final answer:
Physical currency is more popular than e-cash because of its portability and recognizability.
Step-by-step explanation:
When comparing physical currency and e-cash, physical currency is more popular than e-cash.
Physical currency is portable and recognizable, making it convenient for transactions.
On the other hand, e-cash is less popular but still portable and recognizable.
Both forms of currency have their advantages and features, but physical currency remains the preferred choice for many people.