Pocket billboards recognizes that it has the smallest sliver of an opportunity to deliver advertisers' messages. It's carved that space out with five- to seven-second messages for advertisers like
DirecTV, American Airlines, Sears, and ProFlowers, delivered when users of phone cards input their pin number to make a call. Pocket Billboards partners with phone card makers, like IDT, and peddles
the ad space on the card to a marketer, creating a mini-bill-board along with the embedded audio message.
Callers listen to an ad message, then they can choose to be transferred to the
satellite operator to sign up for the service advertised, or continue placing their call.
Mendel Tropper, a principal in Pocket Billboards, says the company can report to clients
precisely how many people heard the message, since exposure is tracked via the pin number.