Share your insights or perspective on the financial matter presented in the input.

Why don't banks allow more control over credit/debit card charges?
A few years ago I had a US bank credit card that was serviced (all support, website, transaction issues) handled by FIA Card Services (part of Bank of America). I could create one-use credit card numbers, or time-limited (for example, 3 months) numbers.  I could also create ("permanent)) extra card numbers.  All of these could have a max charge value (IIRC, even a fixed value), so you could have a separate card number, with a limit, just for a subscription service or gym membership. The Bank issuing the card cancelled the entire card offering, so I lost these features. Maybe FIA still provides these features on cards they service. As a note to pjc50 (can't comment in this SE yet), Japan has had contactless cards for >10 years, but during use they tend to place them in a special tray (with the sensor underneath) during the transaction.