I wish I had bookmarked this comment, but someone here was dismissive of the Apple Watch's heart tracker because, paraphrased, "I just need my fingers to take m

I wish I had bookmarked this comment, but someone here was dismissive of the Apple Watch's heart tracker because, paraphrased, "I just need my fingers to take my own heart rate any time I choose." What you're arguing is both true and irrelevant. We don't even need photographs, we could just sketch whatever is in front of us, but convenience matters.