The item that Antonio uses to store a certain amount of value to limit his risk of overexposure is a Smart card.
A smart card allows for people to be able to store a certain amount of the debt that they incur to make purchases.
By uisng only the amount in the card, the person's spending will be limited, which would reduce their risk over overexposure.
Find out more on smart card debt at https://brainly.com/question/3960883.
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