So you have invested in a smartphone VR headset already? With a controller like Lignum, you can do more on your smartphone. This is a Bluetooth LE controller with ~10ms latency and motion tracking features. It has 24 motion gestures, on/off button, an analog joystick, and everything you need to interact with your content.
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The device is also compatible with Android devices. It weighs 50g. You can find out more on Kickstarter.
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