What is the fine-grained topic of the following text: CES is all wrapped up and everyone is back home, and one of the questions I’ve been asked repeatedly by friends and family is, “What was the coolest thing you saw at CES this year?” Now, keep in mind that I am only one person and I didn’t even see a fraction of the show floor, as there were plenty of meetings set up around Vegas, so this is just my perspective on the coolest technology trends at the show. Only return the topic.
Coolest technology trends at CES from the writer's perspective.