Any thoughts why a system like Eagle Cash[1] couldn't be used more generally? Obviously this particular design is stored value, but that's just a limit the chip

Any thoughts why a system like Eagle Cash[1] couldn't be used more generally? Obviously this particular design is stored value, but that's just a limit the chip is tracking, there's no particular reason it couldn't be based on your credit limit. [1] https://www.fiscal.treasury.gov/fsservices/gov/pmt/eagleCash/eagleCash_home.htm https://www.fiscal.treasury.gov/fsservices/gov/pmt/eagleCash...