Is constructive possession realized when converting dollars to local currency, given cash withdrawal restrictions, but with the possibility of using the amount via a bank card or checks?

For the validity of currency exchange, it is a condition that possession takes place in the same session. Monetary currencies have the rulings of gold and silver. If the money is sent to the family's account in the same session, then possession has occurred, even if they cannot withdraw it immediately. It is permissible for the family to purchase goods with a bank check or a bank card, unless the good is one for which possession is stipulated, such as metals and currencies, because a check or card is not considered possession unless the balance immediately enters the seller's account.