This snippet from a story on cell phones was impressive. People can be quite clever.
Ugandans are using prepaid airtime as a way of transferring money from place to place, something that’s especially important to those who do not use banks. Someone working in Kampala, for instance, who wishes to send the equivalent of $5 back to his mother in a village will buy a $5 prepaid airtime card, but rather than entering the code into his own phone, he will call the village phone operator (“phone ladies” often run their businesses from small kiosks) and read the code to her. She then uses the airtime for her phone and completes the transaction by giving the man’s mother the money, minus a small commission.