SEC filing: Rockley Photonics, developer of sensors that can be used for blood pressure and glucose monitoring, says Apple is currently its biggest customer (David Phelan/Forbes)

David Phelan / Forbes:
SEC filing: Rockley Photonics, developer of sensors that can be used for blood pressure and glucose monitoring, says Apple is currently its biggest customer  —  A new report says that a future Apple Watch could have a new raft of health sensors, including blood pressure and …