A Consultant's View

Prairie Trail Software, Inc. ............................................................. March 2006

FASTER PAY

Now that merchants are installing fast internet connections, the card companies are seeking other ways to speed up using a card. Perhaps you remember Mobil's SpeedPass. People just waved a key "fob" at the pump. It worked- it provided faster transactions-but people quickly broke the system. Although quite a bit of fraud was rumored, a Mobil spokesperson claimed that none had occurred.

Card companies are now shipping their new RFID cards. Mastercard calls theirs PayPass. Chase has Blink cards, American Express has Express Pay, and then there's Visa Contactlesss. How secure are they? Who really benefits from using them? Should anyone be concerned about them?

The buzz on the web is that the John Hopkins researchers who cracked the Mobil SpeedPass in 10 hours were unable to break this new RFID card at all. The new cards use dynamic encryption; whereas, the Mobil card used a static encryption. That makes the job of cracking the cards much, much harder to do.

The only problem reported was at a store with multiple readers arrayed near each other. Several readers read the same card at once. I have not been able to verify this story; nevertheless, considering the dynamic encryption, I have strong doubts about this story's accuracy. Such double reading is far more common with static RFID tags, not these dynamic ones,

This story may be a mixing of experiences with the old and new tags, but even if this does happen, it would occur about as often as restaurants double bill, and it has the same correction. In other words, the fear and uncertainty that is running around the internet is just that.

So, what are the benefits of such a card? Card networks have the goal of replacing cash with transaction cards. This is one step along the way. So, the card networks are pleased with results.

Merchants benefit a lot from these cards- especially where speed is an issue. If the merchant has the option of not contacting the issuer for small payments, transaction are even faster. One company listed transaction times as:

checks 64.0 seconds
credit/debit 48.4 seconds
PIN debit 44.4 seconds
cash 28.5 seconds
Pay By Touch 15.6 seconds
contactless 12.5 seconds

Times are slightly different for the old drive up window. Close to 20 seconds can be saved over using cash.

Merchants like the idea of using cards of any kind. Quick service restaurants find that switching people to credit cards means a 20% larger ticket on average. It's that old human tendency: if I don't have to pay for it right now, I'll buy more.