Still wondering if this will need an adapter or something. So, if someone is wearing a light sweater, it can tell your heartbeat ? Not sure how that is even possible as it's taking it's info from what the eye can see.
They claim it can do it, so it should do it but, the big question is how and how accurate it will be.
Well it can't really be very accurate, but i suppose they are using the Time of Flight sensor for this, each photon that bounces off somewhere has a different time it will come back, so technically this sensor could see your veins pulsing, your head is usually exposed so this is probably where they try to focus on.