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- Enable Internet connection on the Smartphone.
- Start the HeartSong app.
- Place your index finger on the lens of your Smartphone camera.
- You will see a Beats per minute measurement on the top Left side of the screen.
- In about 10 seconds a song to normalize your heart rate will be played
- You can change the song or get the BPM measurement again by pressing the shuffle button.
- To exit the app or read help file, press the menu button on the phone.