A wire transfer can be used if a person has to transmit money right away due to an emergency situation. For example, X's child resides abroad and requires funds to cover an unforeseen home repair. X can obtain their child's bank details and use them to transfer funds from their own bank to their child's. If their child doesn't have a bank account, X can use money-transfer companies such as MoneyGram or WesternUnion to send money to the child.