there's a backup laminated paper badge for when the electronic badge runs out of stock, maybe it's that
Given that #badgelife folks have difficulty manufacturing hundreds of badges they themselves designed and there's been no real scrutiny of attendee badges as would surely result if it were found that 5%+ of attendees had counterfeits, I have to call bullshit.
If reasonable evidence is presented to the contrary, I will eat my hat by donating the $300 I won't be spending for this year's DEF CON admission to the EFF.