At the very least, they probably should require all vendors to accept imprints (the old offline compatible paper-based credit card protocol). It’d better if th

At the very least, they probably should require all vendors to accept imprints (the old offline compatible paper-based credit card protocol). It’d better if the government just mandated the eCash system in the back half of Applied Cryptography (which is similar to the Japanese system discussed elsewhere in this thread).