One-handed operation of mobile electronic devices

A computer program product for one-handed operation of a mobile computing device, the computer program product comprising:

• a computer readable storage medium and program instructions stored on the computer readable storage medium, the program instructions comprising:
• program instructions to display, by one or more computer processors, an indicator on a graphical user interface of a wearable computing device;
• program instructions to determine, by one or more computer processors, a directional displacement of an interface device, wherein the interface device is a wearable electronic device that is removably connected to a finger of a user of the wearable computing device;
• program instructions to, responsive to associating, by one or more computer processors, the indicator with a graphical user interface object based, at least in part on, the directional displacement of the interface device, modify, by one or more computer processors, the graphical user interface to visually indicate the association between the indicator and the graphical user interface object;
• and
• program instructions to, responsive to determining, by one or more computer processors, that a force exerted by a surface in contact with the interface device exceeds a threshold, activate, by one or more computer processors, the graphical user interface object.

A computer system for one-handed operation of a mobile computing device, the computer system comprising:

• one or more computer processors;
• one or more computer readable storage media;
• program instructions stored on the computer readable storage media for execution by at least one of the one or more processors, the program instructions comprising:
• program instructions to display, by one or more computer processors, an indicator on a graphical user interface of a wearable computing device;
• program instructions to determine, by one or more computer processors, a directional displacement of an interface device, wherein the interface device is a wearable electronic device that is removably connected to a finger of a user of the wearable computing device;
• program instructions to, responsive to associating, by one or more computer processors, the indicator with a graphical user interface object based, at least in part, on the directional displacement of the interface device, modify, by one or more computer processors, the graphical user interface to visually indicate the association between the indicator and the graphical user interface object;
• and
• program instructions to, responsive to determining, by one or more computer processors, that a force exerted by a surface in contact with the interface device exceeds a threshold, activate, by one or more computer processors, the graphical user interface object.