The next-generation Samsung Galaxy Note 4 is expected to launch this September at the IFA 2014 trade show in Berlin and may boast a retinal scanner.

The current Samsung Galaxy Note 3 is a real powerhouse, boasting high-end specs and features all around. Its successor, the purported Galaxy Note 4, is expected to be even more powerful, boasting several notable improvements over the current generation.

Samsung introduced a fingerprint reader with its Galaxy S5 flagship smartphone, and the company's future lineup of high-end devices is also expected to include such technology for extra security. As it turns out, however, the Samsung Galaxy Note 4 may take things a step forward and include a retinal scanner.

Samsung's official Twitter account for news related to its proprietary chipset and processor band, @SamsungExynos, has posted a very intriguing tweet over the weekend.

"Security can be improved using features unique to us. That's what we envision. What would you use?" reads the tweet, published under the #ExynosTomorrow hashtag.

Moreover, the tweet includes an image that shows a phablet-like device, and a human eye is reflected on the gadget. While nothing is specifically mentioned, the image does strongly suggest that the Samsung Galaxy Note 4 will come rocking a retinal scanner for beefed up security.

It's worth pointing out that this is not the first time that such technology is rumored for the Samsung Galaxy Note 4. A few months back, rumors suggested that Samsung was looking into using biometric security such as fingerprint scanners and iris scanners (not retina) for its next-generation devices. Nothing is confirmed at this point, but it wouldn't be too surprising if the next flagship phablet from Samsung did boast some top-notch biometric security features.

In terms of specs, the Samsung Galaxy Note 4 is expected to launch as a top-notch powerhouse. The phablet will reportedly pack a Qualcomm Snapdragon 805 quad-core processor clocked at 2.7GHz or a Samsung Exynos 5433 octa-core chip, depending on region. The latter could be a 64-bit chip, according to rumors.

Considering that the Galaxy Note 3 already comes with a hefty 3GB of RAM on board, its successor should at least match that, if not top it with 4GB of RAM. As previously mentioned, however, nothing is official at this point. More information will surely surface ahead of the phablet's debut at IFA 2014 in September, and we'll keep you up to date as soon as we hear more.