Bank transfer is equivalent to your own card transfer, which does not involve the transfer of other accounts, so it is very safe and does not need a U shield or anything. But you'd better turn off the transfer function of that card and can't transfer it out. Anyway, that's what I did, which can basically prevent the money in your account from being transferred out by others with stolen passwords. At most, it is possible for someone to withdraw money after copying the card and ID card, up to 50,000. But this kind of thing has nothing to do with bank transfer. Any card has this problem.