I asked the Deputy about taking credit cards. She said Independents cabs. Who don't belong to an affiliation. Don't have to take them in city of chicago. Unless, you want to work the airports. Then, you have to take credit cards. I checked out some of them credit card vendors. They are all big ripoffs. I am independent owner and opeartor for my taxi cab corperation. I enjoy working the city. The aiports used to be good. But, I hated seeing and dealing with consumer inspectors at the aiports, the taxi starters are always selling fares to other drivers, taxi cabdrivers are always fighing in the aiports, the airport stamp is a big ripoff, the kennedy is always under road work at night, and sometimes there are long waits at the airports. I do good in the city. If, the city is slow? I just go home. Because, My taxi Medallion and car is payed out already. I really don't care about the city stupid credit card rules.