Heads up

There has been some speculation on the lack of an instrument cluster for Tesla‚Äôs prototype for the Model 3. Initially I wasn’t sure if this was just an early version with an evolving interior, but after we learned Tesla had started hiring people in the heads up display space it became fairly clear they were

Was the tattooed wrist a blind spot in Apple’s vision?

So it would appear that the new Apple Watch doesn’t work too well with people that have dark tattoos on their wrists, with the watch’s heart-rate monitor – one of the key hardware features underpinning Apple’s Heathkit API for developers of health, fitness and sporting apps for the watch – failing to pick up accurate readings for these users.