What if people could transfer money over Twitter for next to nothing, simply by typing a username and a dollar amount?�Just a decade ago, the idea of moving money that quickly and cheaply would have been ridiculous. Checks took ages to clear. Transferring money from one bank account to another could take days, as banks leisurely handed off funds, levying fees nearly every step of the way. Credit cards made it a little easier to pass money to a friend — provided that friend owned a credit card reader and didn’t mind paying a few percentage points in fees or waiting a couple of days for the payment to process.
Money Over Time:�A brief history of�currency technology.�—Bryan Gardiner