Companies like NetCheque and Cybercash that advocate
using a checking account-like system of ecash provide
software that takes advantage of interfaces like the
one shown below from NetCheque.
This form follows the normal conventions for checks:
many of the same elements are here and they are located in
roughly the same places. On the other hand, there are no
dates and no check numbers: presumably the computer takes
care of those, but it also implies that time and distance
are not critical factors in ecash transactions.
Also different about these checks is the addition of a
button to the far right that allows you to change the type
of currency one is writing the check on (it allows for
multiple, perhaps nonstandard types of ecash) and requires
a double-signature consisting of your name and your
password. This form, then, foregrounds security and
flexibility as two important features of ecash.