WONDER #2092: How Do Fitness Trackers Work?

Question 1 of 3

Most fitness trackers communicate with smartphone applications using which technology?

  1. Bluetooth
  2. analog
  3. carrier pigeon
  4. Greenhair

Question 2 of 3

Which of the following is NOT one of the measurements taken by accelerometers in modern fitness trackers?

  1. start of motion
  2. intensity
  3. end of motion
  4. heart rate

Question 3 of 3

Which sensor would be used to estimate how many flights of stairs you’ve climbed?

  1. accelerometer
  2. heart rate
  3. pulse
  4. altimeter

Check your answers online at https://wonderopolis.org/wonder/how-do-fitness-trackers-work.