US Patent 9035891 Multi-point touch-sensitive sensor user interface using distinct digit identification

For digit identification on a multi-point touch sensitive sensor, an assignment module assigns a digit identity to each digit of at least two digits in contact with a multi-point touch sensitive sensor during a learning phase. The digit identity includes a distinct representation of each digit. A receiving module detects a digit interaction of one or more particular digits of the at least two digits with the multi-point touch-sensitive sensor. A determination module recognizes the assigned digit identity for each particular digit involved in the digit interaction.