It could be as common as sending a pin to YOUR phone or that they actually call the bank to authorize it.
Some join accounts also require approval from both parties to transfer large amounts of money.
Additionally you can open a secondary account for your elderly relatives for daily expenses, they fund this account from their main account.
Anything you do, do it at the banking level, do not rely on your elderly relatives to doge pretty sophisticated scams.
It could be as common as sending a pin to YOUR phone or that they actually call the bank to authorize it.
Some join accounts also require approval from both parties to transfer large amounts of money.
Additionally you can open a secondary account for your elderly relatives for daily expenses, they fund this account from their main account.
Anything you do, do it at the banking level, do not rely on your elderly relatives to doge pretty sophisticated scams.