You no longer have to run to the ATM machine when you need to come up with some cash for a friend. Square has a new service called Square Cash that makes sending money as easy as sending an e-mail, literally. All you do is punch in how much you need to send, type in your friend's e-mail address, and once you link your debit card number the money is immediately on its way. Your friend doesn't need to use the app or sign up for any services either, they just enter their debit card number and the cash is deposited into their account within 1-2 days. Easy as pie.
Available on Android and iOS, Square