User interface method

A computer-implemented method comprising:

• detecting, at a wearable computing device, a direction of a stare, wherein the wearable computing device includes a head-mountable display unit;
• identifying a target based on the detected direction;
• based on a determination that a first time duration of the stare is greater than or equal to a first predetermined time threshold, identifying information relevant to the target and displaying the identified information on the display unit;
• subsequent to displaying the identified information, determining that a second time duration of the stare is greater than or equal to a second predetermined time threshold;
• based on a determination that the second time duration of the stare is greater than or equal to the second predetermined time threshold, identifying additional information relevant to the target, and displaying the additional information on the display unit.

A computer-implemented method comprising:

• detecting, at a wearable computing device, a direction of a stare, wherein the wearable computing device includes a head-mountable display unit;
• identifying a target based on the detected direction;
• based on a determination that a first time duration of the stare is greater than or equal to a first predetermined time threshold, identifying information relevant to the target and displaying the identified information on the head-mountable display unit;
• and
• subsequent to displaying the identified information, progressively displaying additional information about the target while the stare continues, comprising:
• determining that a second time duration of the stare is greater than or equal to a second predetermined time threshold;
• and
• based on a determination that the second time duration of the stare is greater than or equal to the second predetermined time threshold, identifying additional information relevant to the target, and displaying the additional information on the head-mountable display unit.