Samsung Galaxy Note 4
A concept design photo of Samsung Galaxy Note 4.

Samsung could be secretly planning to debut the Retinal Scanner with improved security feature for its future mobile gadgets, according to a recent tweet from the company's official Twitter handle, @SamsungExynos.

The tweet with an embedded image clearly suggests Samsung's idea of designing a unique security feature using the retinal scanning technology on its mobile platform.

This actually implies we might see a biometric security upgrade over the existing fingerprint scanner feature found on the Galaxy Note 4.

Galaxy Note 4 to Include Retinal Scanner with Improved Security Feature
Samsung\'s official tweet hints at Retinal Scanner Debut for Galaxy Note 4 Twitter

"Security can be improved using features unique to us. That's what we envision. What would you use?" writes the company in its tweet, with an ExynosTomorrow hashtag.

Though the tweet sets its vision for the future, there is no denying the possibility that the Retinal Scanner feature might actually debut with the upcoming Galaxy Note 4, as reported by SamMobile.

Speculation is rife that Samsung's next-generation flagship phablet will be unveiled at Berlin's IFA event in September 2014.

According to latest rumours, the Note 4 is expected to feature 5.7in QHD display, 3GB of RAM, 32GB of internal storage, 16-megapixel rear camera and run Android 4.4.4 KitKat out of the box.

On the processor front, the 5.7in phablet is rumoured to ship in two variants: Exynos 5433 octa-core processor paired with Mali-T760 graphics processing unit, and the other featuring Snapdragon 805 CPU and Adreno 420 GPU.