Embodiments of the present method comprise activating a data recording component on the computing device to receive information relating to the environment of the computer user and executing a quality check module in the computing device operative to analyse the environment of the computer user. The quality check module performs the steps of: assessing a received signal from the data recording component against a predetermined quality metric to ascertain if an informational content of the received signal meets a predetermined minimum quality to permit computer user behavioural data to be collected therefrom, determining and executing a responsive action where the received signal does not satisfy the quality metric, and initiating a computer user behavioural data collection process to computer user collect behavioural data during the interaction between the computer user and the computing device where the received signal satisfies the quality metric.