Apple iWatch could come with UV sensor

Silicon Labs' chip could also be used for health and movement sensing

The Apple iWatch could come UV exposure sensors, according to an analyst at Barclays.

While we still don’t know Apple’s iWatch launch date, we continue to get more information about what to expect from the smart watch.

According to an investment note released by Barclays analyst Blayne Curtis, Apple’s smart watch is likely to come with a UV sensor. His comments follow the announcement by Silicon Labs of the world’s first single-chip digital UV index sensors.

“These chips measure UV exposure to aid those with elevated risk of sunburn or just a general concern about excessive sun exposure, and we believe they may be of appealing [sic] to OEMs looking to differentiate in a crowded market,” Curtis wrote.

According to Silicon Labs, UV tracking isn’t the sensor’s only ability. It can also analyse heart rate, pulse and blood oxygen levels. It can also provide proximity and gesture sensing via infrared and ambient light.

The sensors are just 2mm square – perfect for a device like the iWatch. Analysts have previously speculated that Apple may look to incorporate a similar type of device in its iWatch.

Curtis has predicted that Apple’s iWatch could be worth as much as $4 million in addition revenue for Silicon Labs – that’s a whole lot of iWatches.