Method and apparatus for classifying a touch event on a touchscreen as related to one of multiple function generating interaction layers

A method for classifying touch events, the method comprising:

• displaying an interactive element of a touch screen;
• monitoring one or more vibro-acoustic sensors operating inside the device to save vibro-acoustic signals sensed by the one or more vibro-acoustic sensors;
• detecting touch events in which the interactive element is touched by a first or a second finger part of a user, wherein the touch events result in generating touch event signals;
• classifying the vibro-acoustic and touch event signals;
• determining whether the first finger part or the second finger part is used to touch the interactive element on the touch screen based on classified vibro-acoustic and touch event signals;
• and
• selectively generating a corresponding function from a plurality of interaction layers depending upon whether the first finger part or the second finger part is used to touch the interactive element.

A non-transitory computer readable medium containing instructions for classifying touch events, wherein execution of the program instructions by a processor causes the processor to carry out the steps of:

• displaying an interactive element of a touch screen;
• monitoring one or more vibro acoustic sensors coupled to the touch screen to save vibro-acoustic signals sensed by the one or more vibro acoustic sensors;
• detecting touch events in which the interactive element is touched by a first or a second finger part of a user, wherein the touch events result in generating the vibro-acoustic signals;
• classifying at least one of the vibro-acoustic signals and the touch events;
• determining whether the first finger part or the second finger part is used to touch the interactive element on the touch screen based on said classifying;
• and
• initiating a function selection from different interaction layers depending whether the first finger part or the second finger part was used to touch the interactive element.