COLOR SAVECARD / Cash card

We often overspend or buy on impulse involuntarily when we use credit cards and debit cards. Be-
cause it is invisible right away we to spend money like cash when we use cards. In psychology, for
we get back the credit card, the brain does not regard as a loss. So the amount of the money when
we use cards exceeds cash. Considering these points, if there are a sign of the bank balance and a
change of colors which indicate the accumulated spend on the card, they will help saving. If the
color of the card turns red as danger signal, the change will make us rethink of the spending.