Unilever has piloted a wristband that monitors shoppers’ habits and prompts them on how to lead healthier lifestyles.

The device - dubbed a ‘behaviour engine’ by Unilever - works in conjunction with an app and is being lined up for wider rollout after successful trials over recent months. Sleep patterns and physical activity are recorded by the wristband, while the app tracks buying behaviour, nutrition habits and other elements of shoppers’ lifestyles.

The behaviour engine was developed by Unilever’s research team at Port Sunlight, Merseyside, alongside tech company Tessella. Trials were carried out from the end of 2013.

“The system is about capturing ‘atoms of behaviour’ as participants go about their usual day,” said Tessella consumer industries sector director Dr Keith Norman. “It sends out hints and tips to encourage healthier behaviour.”

Unilever open innovation director Matt Reed added: “With this new system, Tessella has given future studies the ability to collect and analyse data on the fly in a continuous process that incorporates response and feedback throughout.”