File photos by John Han.
Earlier this year a contest began between the presidents of DeSoto Cab and Green Cab, to see if tips prompted by rear seat passenger information monitors, (PIMs), really increases a driver's tip percentages, thus making drivers more money.
Part of the reasoning behind PIMs was that if they were to increase drivers' tip percentages, then 5% credit card charges imposed upon drivers would become a non-issue, since higher income from PIMs would 'more than make up for the credit card costs'.
The idea caught on.
Hansu Kim, DeSoto Cab's president, is and has been one of the industry's most ardent proponent of getting PIMs installed in San Francisco, and for allowing cab drivers to legally incur a 5% credit card cost.