While I like the idea behind coin and similar systems like the stratos card and would use the technology, usually these systems don't make it past prototypes.
Visa/MC/Disc/Amex put an end to a lot of these all-in-one cards. If they do get released, they don't last long.
Storing full track data, which is what these systems do, is against card company regulations. They own the magnetic stripe data and keep tight controls over how it is used.
Coinbase and others including Square, and pretty much any other Payment Provider that offers accounts with no physical signature card use id validation services that generally pull information from your credit report in the form of validating questions to answer and potentially a color coded range of your credit score (getting the actual score results in a "hard" credit hit.) These do not reflect on your credit report and are referred to as "Soft credit checks." You would get much more explicit warning if it were not as required by law. These types of blanket statements cover the soft checks. The action they are referring to is terminating an account with an active bankruptcy or failing an OFAC or PEP (politically exposed persons) check.
While I like the idea behind coin and similar systems like the stratos card and would use the technology, usually these systems don't make it past prototypes.
Visa/MC/Disc/Amex put an end to a lot of these all-in-one cards. If they do get released, they don't last long.
Storing full track data, which is what these systems do, is against card company regulations. They own the magnetic stripe data and keep tight controls over how it is used.
For a simple overview see: http://www.visa.com/dropthedata/data.html