An apparatus and method for sensing

摘要

An apparatus and method, the apparatus comprising: a sensor array (3) comprising a plurality of first sensors (5) configured to detect a first attribute; at least one second sensor (7) configured to detect a second attribute; wherein the at least one second sensor is configured such that, in response to detecting a trigger input comprising the second attribute the second sensor enables a first portion of the sensor array to be powered on while a second portion of the sensor array remains powered off.