Systems and methods for performing multi-touch operations on a head-mountable device

A method comprising:

• receiving first input data from a first input interface that corresponds to a first input action that is one or more of a first plurality of gestures, wherein the first input interface is arranged on first surface of a side-arm of a glasses-style head-wearable device;
• receiving second input data from a second input interface that corresponds to a second input action, wherein the second input interface is arranged on a second surface of the side-arm that is opposite the first input interface, wherein the first surface and the second surface are arranged as an inferior surface and a superior surface of the side-arm, respectively, when the glasses-style head-wearable device is worn, such that the first surface and the second surface are positioned to receive input from a thumb and another finger on a same hand as the thumb, respectively, when the head-wearable device is worn;
• responsive to the receipt of the first input data, causing a camera associated with the head-wearable device to perform a first camera operation in accordance with the first input action;
• responsive to the receipt of the second input data, causing the camera to perform a second camera operation that is different from the first camera operation;
• receiving third input data comprising a combination of input data from the first and second input interface, wherein the third input data corresponds to an interaction with the inferiorly-arranged first surface by the thumb and a contemporaneous interaction with the superiorly-arranged second surface by a single other finger on the same hand as the thumb;
• and
• responsive to the receipt of the third input data, causing the camera to perform a third camera operation that is different from the first and second camera operations.

A non-transitory computer readable memory having stored therein instructions executable by a computing device to cause the computing device to perform functions comprising:

• receiving first input data from a first input interface that corresponds to a first input action that is one or more of a first plurality of gestures, wherein the first input interface is arranged on first surface of a side-arm of a glasses-style head-wearable device;
• receiving second input data from a second input interface that corresponds to a second input action, wherein the second input interface is arranged on a second surface of the side-arm that is opposite the first input interface, wherein the first surface and the second surface are arranged as an inferior surface and a superior surface of the side-arm, respectively, when the glasses-style head-wearable device is worn, such that the first surface and the second surface are positioned to receive input from a thumb and another finger on a same hand as the thumb, respectively, when the head-wearable device is worn;
• responsive to the receipt of the first input data, causing a camera associated with the head-wearable device to perform a first camera operation in accordance with the first input action;
• responsive to the receipt of the second input data, causing the camera to perform a second camera operation that is different from the first camera operation;
• receiving third input data comprising a combination of input data from the first and second input interface, wherein the third input data corresponds to an interaction with the inferiorly-arranged first surface by the thumb and a contemporaneous interaction with the superiorly-arranged second surface by a single other finger on the same hand as the thumb;
• and
• responsive to the receipt of the third input data, causing the camera to perform a third camera operation that is different from the first and second camera operations.