Hello, According to google cardboard certification for input as below:
Input - Your viewer should contain exactly one input. If your viewer has affordances for a direct screen touch, ensure that there is at most one dedicated area for touching the screen. - Your viewer can use different types of inputs, from a simple smartphone screen touch, conductive and capacitive inputs, to Bluetooth-based buttons, and so on. - If you’re using a conductive input which passes user’s body charge onto the smartphone screen, ensure that the input is not touching the screen in a “non-pressed” state. How implement the bluetooth-based button? Need BLE HID to send input event? What type event and keycode? Is there any document to descript it? -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/6702cb6c-f284-4849-97da-66a28d1a8b22%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

