Sony has revealed a 'life logging' software that charts a person's activities on an interactive timeline.
The app records when a user speaks to friends, receives emails and watches a film amongst many other smartphone actions.
The android app receives data from a new, smaller piece of wearable hardware called the core, which acts as an activity tracker.
Their latest app is likely to raise security issues, coming so soon after revelations about how spy agencies have forced tech companies to hand over user information.
Sony has however attempted to play down the issue.
A spokesman for Sony said: "Sony treats the security and privacy of our users' personal data with the utmost stringency and integrity, adhering to legalities and ensuring it remains protected under appropriate technological procedures.
"Upon first sign-in to Lifelog app, we make it clear absolutely clear what data users are submitting, how it is being used and provide them with option of opting in or out before proceeding."
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