This project combines proven diagnostic strategies (EEG and gait-based dual-tasking) with an innovative and groundbreaking approach focused on monitoring the use of smartphones fully integrated in our daily routines. The main goal is studying the impact of cognitive condition in the interaction and use of smartphones with the objective of supporting the early diagnosis of Mild Cognitive Impairment. The user behaviour and interaction patterns (BIPs) are studied as part of multitasking. What happens when a person walks and uses the mobile phone at the same time?