According to foreign media iLounge, according to the latest patent granted by the United States Patent and Trademark Office, Apple Watch may have a vein detection function in the future.

The current Apple Watch is controlled by touch. Additionally, it features a scrollable button Digital Crown that also provides some input capabilities. However, the aforementioned patent suggests that users do not need to touch the Apple Watch's screen to use their Apple smartwatch. The patent filed by the company is titled Vein Scanning Device for Automatic Gesture and Finger Recognition.

Apple Watch may have vein detection function in the future (Source: iLounge)

The patent details the working principle of Apple Watch, saying that the vein detection system will be able to capture the veins of the user’s wrist. image, the imaging system will be able to interpret various movements of the human hand.

The vein detection system will reportedly work by analyzing multiple factors, such as the location of the veins, their relative spacing, shape, blood flow and displacement. All this data can then be used to perform specific custom actions based on the gestures of the user's hands.

The system will most likely work on a neural network or machine learning model that will be trained to understand various human hand movements. For the Apple Watch, this could be a useful accessibility feature.