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Fitbit sued and Apple sales +2

I had figured that today's drop was just a function of more worries over the weak Apple sales that I had been predicting all along.  However, a subscriber asks:
Does invensense supply the heart rate monitor for Fitbit?  I see they are getting sued. 
InvenSense does not supply heart rate monitors.  As per this update, it offers a method of correcting the readings from photoplethysmography (PPG) so that they are more accurate.  Thus the lawsuits of this type are a potential positive for InvenSense.