Credsticks
Credsticks aren't gateways to the entirety of one's wealth, and larger stores of credits are often kept secured in banks, personal vaults, or secure databases. Instead, a credstick is a safe and anonymous means of moving credits around without being traced. Adventurers and common citizens alike often keep a credstick on their person to handle any purchases they might be called upon to make, while also only keeping just enough credits on them that losing the credstick wouldn't result in bankruptcy.
Individuals in the Pact Worlds often carry credsticks, and other civilizations that interact with the Pact often turn local funds into credits and thus carry them to spend their converted currency. Sometimes a person might carry several credsticks, dedicating each one to a different use, or simply trading the stick away if they want to make a purchase of a predefined amount. If ever the number of credsticks on a person becomes too cumbersome, it's easy enough to move the funds between individual sticks and discard emptied sticks to save on space, however a credstick always has a negligible bulk.