Force sensing system and method

A force sensing system for determining if a user input has occurred, the system comprising:

• an input channel, to receive an input from at least one force sensor;
• an activity detection stage, to monitor an activity level of the input from the at least one force sensor and, responsive to an activity level which may be indicative of a user input being reached, to generate an indication that an activity has occurred at the force sensor;
• and
• an event detection stage to receive said indication, and to determine if a user input has occurred based on the received input from the at least one force sensors;
• wherein the event detection stage comprises a comparison stage arranged to compare the received indication against a stored touch event model, and to determine if a user input has occurred based on the comparison;
• wherein the touch event model comprises a support-vector machine model;
• wherein the event detection stage is configured to determine based on the comparison against the touch event model whether the user input corresponds to a defined type of user input or a defined sequence of defined types of user input;
• wherein the event detection stage is operable, dependent on a defined type of user input to which a first received said indication is determined to correspond, to adapt the support-vector machine model for a second received said indication.