Digital wallets and vein scanners: How we’ll pay for...

Digital wallets and vein scanners: How we’ll pay for things in the future

By Teo Kermeliotis, for CNN, cnn.com

Future Finance showcases future trends related to the global financial system.

(CNN) — How did you pay for your coffee this morning?

If you’re in San Francisco, perhaps you waved your smartphone over a payment terminal; if in…