Zomato founder and CEO Deepinder Goyal was recently seen sporting a new tech gadget on his temple. His appearance with the gadget sparked curiosity across the internet. Weeks after appearing with the new tech gizmo, Goyal has shared a new update on the product’s launch with a “coming soon” social media post on Sunday.
The update, which was posted across social media with an image of the device, comes after Goyal had earlier explained that the temple device is an under-development “experimental device to calculate Brain Flow accurately, real-time, and continuously,” and was developed while researching his Gravity Ageing Hypothesis.
Coming soon.
— Deepinder Goyal (@deepigoyal) December 7, 2025
Follow @temple for more updates. pic.twitter.com/E7S8NeUDP4
In a series of posts on November 15, Goyal explained a “scientific yet unconventional” hypothesis. As per the findings of the hypothesis, gravity plays a direct role in human ageing. Goyal further added that his curiosity to know more about the hypothesis led him to research the subject. He said:
“I’m not sharing this as the CEO of Eternal, but as a fellow human, curious enough to follow a strange thread. A thread I can’t keep to myself any longer. It’s open-source, backed by science, and shared with you as part of our common quest for scientific progress on human longevity. Newton gave us a word for it. Einstein said it bends spacetime. I am saying gravity shortens lifespan.”
How did I come across this?
— Deepinder Goyal (@deepigoyal) November 15, 2025
I’ve spent years optimizing my health and performance. I’ve tracked my blood. I’ve fasted, trained, meditated, submerged myself in ice, sat in hyperbaric chambers, and taken countless supplements. Staying healthy is hard. It takes too much time.
One… https://t.co/JwBjmBlU6y
He later added what sparked his curiosity about the impact of gravity on health. He said:
“I’ve spent years optimizing my health and performance. I’ve tracked my blood. I’ve fasted, trained, meditated, submerged myself in ice, sat in hyperbaric chambers, and taken countless supplements. Staying healthy is hard. It takes too much time.”
“I racked my brain, searching for what that overlooked factor could be. What is constant across all organisms, inescapable by mutation or adaptation, obvious yet invisible? And then, a word surfaced in my mind.”
Goyal’s post on Sunday drew mixed reactions, with some asking for more updates about the launch and availability of the product, while others criticised the concept behind it.
The development of such sensors has been ongoing for a while. While searching for similar sensors over the internet, we found a video showcasing a group of students from the University of California developing new ultrasound patches that actively monitor blood flow to the brain. But since using the ultrasound wave-producing apparatus decreases practicality, it is possible that the new temple device from Zomato uses some other kind of sensors. It is possible that the temple might be equipped with optical sensors, similar to a smartwatch, to measure heartbeat and blood flow.
Optical sensors are able to calculate blood pressure and heartbeat with the help of photoplethysmography (PPG). The sensors measure heart rate by shining light—often green or infrared—into the skin and detecting how much is reflected back. Blood absorbs more light, and each heartbeat causes blood volume changes, altering light reflection to create a signal that changes algorithms that translate data into beats per minute.
It is possible that the new temple device might use similar technology that has been miniaturized to be strapped onto the head. These are mere reflections on how it might work; we will get a clear idea about the tech once it launches.
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