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A recent patent application  WO/2022/265354 filed by Samsung specifies a Wearable device (ring), which can be used to control other devices, including HMD, laptop, TV, smartphone, etc.

The device has external and internal surface electrodes based on the structure shown in Figures 1, 3a,3b, 4a, and 4b. Using the second finger, the device senses user contact on the external surface electrode. After recognizing the contact pattern through the measured impedance between both electrodes, the operation of a wearable device is controlled.

 

Another example is shown in the figure, which portrays how a finger touch on the ring can change virtual object location while using an HMD. When the ring can control the HMD, the user can command and change the site of a virtual object in the HMD.

The user can access various services such as call, message transmission and reception, and music playback using the wearable ring.

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