Well, the most annoying technological product I’ve ever used is a sweeping robot. You know, it’s really difficult to use. Actually I got it for my mom as a birthday gift (for her) last year but she didn’t want it because she believed mopping by hand would be more efficient. Therefore, I kept it for myself but I’ve regretted it since. You know, the robot is a round, white one, which can easily get dirty. So I don’t know whether it’s the robot that cleans my house or it’s me who cleans it. Moreover, according to the advertisement, it should automatically go around a room and clean up the floor. However, it sometimes stays in the same spot without moving forward and even after a few hours, the room is still not cleaned. What makes me hate the product is that the battery dies fast. Or rather, it has to be charged every other hour! How can people produce such a hard-to-use device? Honestly, I’ve contacted customer service but they told me because I bought it at a special price, I could neither exchange it nor get a refund. I guess I’ll just have to put up with it in the future.