Touchless user interfaces

A method of operating an electronic device including a touchless user interface comprising:

• transmitting signals,
• receiving reflected signals after reflection of said signals from an input object,
• processing said reflected signals to determine information regarding the position and/or movement of said input object to provide a user input to the device;
• and
• displaying on a screen a graphical object having one or more associated interactions with which a user can interact with said graphical object through a said user input,
• wherein a rate at which the signals are transmitted is increased if said input object is determined to be within a predetermined vicinity of said screen or a graphical object on said screen.

A non-transitory computer-readable medium comprising computer software having logic or instructions which, when executed, operates an electronic device to:

• transmit signals,
• receive reflected signals after reflection of said signals from an input object,
• process said reflected signals to determine information regarding the position and/or movement of said input object to provide a user input to the device;
• and
• display on a screen a graphical object having one or more associated interactions with which a user can interact with said graphical object through a said user input,
• wherein a rate at which the signals are transmitted is increased if said input object is determined to be within a predetermined vicinity of said screen or a graphical object on said screen.