Player Core
Chapter 6: Equipment
Credits and Currency
Source Player Core pg. 233
The basic currency of the Pact Worlds (and Starfinder overall) is the credit. Interplanetary business is conducted through the trade of credits standardized by the strenuous banking regulations of various interstellar powers and organizations, like the Church of Abadar. Though not every civilization uses the Pact credit as its basis of currency, many have converted over. In cases where a civilization hasn't converted over, there are often agreements in place to determine the relative worth of a credit compared to local currency. Except when dealing with completely hostile civilizations or undiscovered regions of space, the Pact credit is usable in almost any circumstance.
Pact credits themselves are a combination of both digital and physical currency assets. One person might contain all their credits on a digital datacrypt that's safeguarded by the most rigorous of protections and authenticated by reputable banking institutions. Another person might keep their wealth on privately minted plastic chips that have been magically enhanced to contain a specific aura that can be authenticated by any basic device capable of scanning currency.
Pact credits themselves are a combination of both digital and physical currency assets. One person might contain all their credits on a digital datacrypt that's safeguarded by the most rigorous of protections and authenticated by reputable banking institutions. Another person might keep their wealth on privately minted plastic chips that have been magically enhanced to contain a specific aura that can be authenticated by any basic device capable of scanning currency.