Did IT revolution bring equal opportunity to everyone? New IT technologies have brought lots of benefits to people. So, most of us think new technology could improve whole human being's quality of life. In a sense, it may be right. However, I sometimes find that this convenience and efficiency might be disaster for some other people. In Korea, Uber is illegal. But we have something similar to Uber. That is Kacao Taxi. Its technological methodology seems quite similar to Uber. It connects professional taxi drivers to potential customer simultaneously. Most taxi drivers in my neighborhood know where I am and where I am headed when I call a cab by the application. I also know there are more than 62 available taxis in my neighborhood. but when I designated my destination which is 3 dollars distance, nobody answered my call. That is the shadow of IT efficiency. They know coming to my home to pick me up is not worth 3 dollars. (My home is located at the foot of mountain) In the past, information technology was not highly developed, I used to call regional taxi call center. Then they would send me a cab. (It took a time, but anyway I got a cab) I thought of an old lady (my mother's generation), who has poor eye-sight to look into a smartphone. What if she is not familiar with using taxi application on the small smartphone screen? Is this world becoming easier and more convenient for her?