Barter or tradegoods, alternative monetary system, developed in Greece as TEM is a limitedproduct acquisition process; however, the credit card is a more optimal, secure and fast. First, the TEM is a processwhich currently has 800 members whom you can exchange, in the middle of a country in which live abouteleven million people. Compared to credit card, which is provided by more than 11 banks in this country, such asAlpha bank, Citibank Greece, EFG Eurobank EFG EurobankErgasias or, etc., which have more than 40%of citizens affiliated. Furthermore,otheradvantage of the debit card is that people can buy productsfrom other countries because manylocal banks are affiliated with otherforeigners to realize the deposit, no opportunityprovided by the TEM, because currently this is just used by Greece. Finally, you don´t need to be sellingsomething to hold cash, as TEM, because with the credit card you can buy whereverand whenever.