thezerg was also proposing decentralized debit card for Ebitz.....guess who was also proposing those.....OPAIR....
Indeed, this was the prime reason I made a post in the thread attempting to advise caution...without wading in like a bull in a china shop and looking unprofessional.
Quite frankly, any project where the developer suggests, or infers that these kind of debit cards are possible on a block chain should be avoided. It's not possible to do, if it was we would have them already, and any developer worth any kind of salt would know why we don't! Using the Zcash protocol brings even more difficulties to pulling it off successfully.
The ONLY way to do it is with a complete and total redesign of the underlying ledger architecture itself with support for them designed into it from the beginning.
Perhaps I should have said more in my post, sorry all!