A fitness tracker is an example of which type of device?

• A. Laptop
• B. Wearable device
• C. Server
• D. Peripheral

Answer: (B)

Wearable devices are electronics designed to be worn on the body to monitor health, fitness, or provide on-the-go sensing. A fitness tracker fits this, since it’s worn on the wrist and continuously collects data like steps and heart rate, often syncing with a phone or app. It’s not a laptop, which is a full portable computer with its own display and input, nor a server, which serves services to other devices, nor a peripheral, which is typically an add-on that attaches to a computer. The defining idea is that it’s worn on the body and performs sensing and data collection directly.