do not use : Wi-Fi or other radio connections, ATM machines.
shield : RFID-equipped cards and passports
When the world's "largest collection of hardcore security experts" is given warnings like that, what chance have the great unwashed got? The proverbial man on the street can't function without these things any more, but as the Black Hat organisers say, even if you're an expert at defending yourself, these technolgies we all depend on are flaky in the extreme.
Consumers, be they organisations or individuals, pay for convenient, expedient and fashionable solutions. They do not pay for security. It has no value for them until after they've paid, by which time the vendor is no longer bothered.