It would make sense to me that fast payments (e.g., bitcoin or mobile payments) cause a higher velocity of the same money supply and that would mean that price inflation is the result. I have a Quora question asking if this is true:
Are PayPal, Dwolla, M-Pesa, and Bitcoin responsible for inflation?
- http://www.quora.com/Are-PayPal-Dwolla-M-Pesa-and-Bitcoin-responsible-for-inflation
I didn't read the 25 pages of this thread, so if velocity increases from instant settlement payment networks is something already addressed here please share a link.
No, in fact. Of course, a high velocity REQUIRES fast payments. The velocity cannot be higher than one over the time it takes to make a payment evidently. If it takes 20 minutes to complete a single transaction, then the velocity can never be larger than 1 year / 20 minutes.
But in the velocity of money, it is not the speed of a single transaction that counts, but the NUMBER of transactions in a given period (say, a year). As such, it is a decision of the consumer to do so, and not inherent in the payment protocol.
After all, with cash, it takes what, 5 or 10 seconds (the time to take the bills out of your wallet, count them, and hand them over). But it is not because you got the cash in 5 or 10 seconds, that you will spend the money every 5 or 10 seconds, right !
If you get cash for something you did (say, your labor), and you get that cash in 10 seconds, you're not going to spend it immediately. You're going to spread your spendings over the time it takes to your next salary. So the transaction time doesn't intervene much in the velocity of money.
You would indeed cause inflation if you (and everybody else) decided to get rid of your money sooner. To buy up everything you need for the next month right away when you receive it, and when the store holder where you buy wants to get rid of the money you give him also immediately, and so on. THEN you would get inflation: when you do not want to HOLD the money any more.
In extreme cases, this is hyperinflation: you've lost all faith in the money and you want to get rid of it as soon as you can. Weimar Reichsmark for instance.
In fact, in your link, you mention something which is rather interesting. If fast payment methods are used to liquidate a DEBT, then it was the DEBT that caused the inflation, and not the fast liquidation of it !
Credit card companies create money because they allow debt. If you spend $50 with a credit card, you didn't receive those $50 yet. The merchant accepts the $50 PROMISE because he has confidence in Visa or Mastercard that he will be able to spend that promise. So it is the merchant, accepting your credit card payment, where he accepts not real dollars, but a promise from Visa to give him $50, that creates money: the PROMISE from Visa turned into money, as if it were really $50, because the merchant accepted that (because he knows that his bank will accept it too).
Now, Visa wanted to make that promise to the merchant, because Visa ultimately made you promise that you owe them now $50. So ultimately it is YOUR promise to pay $50 that allowed visa to promise $50 to the merchant: visa was just an intermediary because of confidence. A merchant will have more confidence in visa than in you, and will accept $50 promises as "money" from visa, but not from you. Visa, on their side, are willing to accept a promise from you.
So all these PROMISES to pay $50 have turned into money as if it were actual dollars, and it is this generalized acceptance of promises for dollars as dollars that increase the money supply.
When people accept promises (debt certificates) as money, the money supply increases of course.
Of course, one day you will pay off your debt to visa. At that moment, money is destroyed. Each time a debt is reimbursed, money is destroyed. But ON AVERAGE, Visa has many outstanding debts, and that is money creation. Not that they print dollars, no. The money creation comes from the fact that people accept promises from Visa as money.