The cards are very insecure and primitive and have been replaced by smart phones in most areas.
One core way they are insecure is based on the main concept of the money which fails to utilize cryptography. Any money that uses cryptography to prevent the need for sharing secrets to execute transactions is a cryptocurrency. Any currency that does not use cryptography is obsolete.
Using physical pieces of paper is also ridiculous at this point. The only real utility is to avoid any kind of taxation, and the only reason that is needed by people is because governmental structures are also horrible and obsolescent.
