Throughout the years, consumers have all heard the stories about how financial information has been stolen when using physical payment terminals. Despite best efforts by card issuers to step up the security game, the payment terminals themselves are inherently insecure. Or to be more precise, the modulated payment protocols powering these terminals are the root of all evil, as there are major security flaws waiting to be exploited.
http://bitcoinist.net/bitcoin-is-destined-to-replace-insecure-payment-protocols/