Why smart cards?
While there are addons that add cards like OpenSecurity they only hold the information to be later presented to a scanner. This is insufficient for application where protection of the stored data is required as with payment cards for example, where one can not guarantee the software running on the scanner is legitimate. So... in order to avoid getting your card details stolen, duplicated and used without your consent we need some zero-knowlede proof of our secret. This could potentially be done in the base game with tablets, datacard and a wireless, but I think a dedicate
