Specifically bitcoin and the all-digital world of money!
http://spectrum.ieee.org/static/future-of-money
I've been part of the way there for years...I check my account info from my smartphone. I can transfer money electronically. I rarely use physical cash. Such things have been predicted in sci-fi for years, but it has happened at a greater rate since the market penetration of portable devices. Soon we will also see the digital transfer of goods, through 3D printing as well...all-in-one transaction!
http://spectrum.ieee.org/static/future-of-money
I've been part of the way there for years...I check my account info from my smartphone. I can transfer money electronically. I rarely use physical cash. Such things have been predicted in sci-fi for years, but it has happened at a greater rate since the market penetration of portable devices. Soon we will also see the digital transfer of goods, through 3D printing as well...all-in-one transaction!

doesn't take that much effort to crack a card for most criminals, losing a wallet full of cards, you might as well hand them all your cash.