'Most important wearable': Zomato founder Deepinder Goyal shares teaser for 'Temple' device, waitlist soon

As of now, Temple remains a prototype and is not yet commercially available.

Deepinder Goyal has once again drawn interest online after posting a new teaser for his experimental wearable device called Temple, sparking discussion about its purpose and potential applications. The announcement, shared on Instagram, provided minimal detail beyond a promotional image and a hint that the product will be made available to the public via a waitlist.

In the Instagram post, Goyal posted a stark, minimalist graphic displaying the word “Temple” at the top, followed by the tagline “The most important wearable ever made.” The image shows a close-up of a person wearing a small, white device positioned near the temple area of the forehead. Goyal captioned the post: “A wearable like no other. Follow @temple to know when the waitlist opens.”

The update quickly drew reactions from users on social networks. Many expressed excitement or curiosity, with one commenting: “I’m excited for all this but how did you even get that username bro.” Another wrote: “Temple by @deepigoyal reflects grace in its simplest form. A timeless everyday accessory.”

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A post shared by Deepinder Goyal (@deepigoyal)

Some responses speculated about its broader impact on technology and wellness: “World is rushing to build LLMs but this man has other goals (this can change everything if it works).” Another user shared a philosophical take: “Temple – the body is the temple and the individual soul is the eternal God.”

What is the Temple device?

The device traces back to research Goyal shared publicly in November 2025 called the “Gravity Ageing Hypothesis.” This idea proposes that, over a lifetime, the constant pull of gravity may gradually reduce effective blood circulation to the brain — and that this subtle reduction could be linked to aspects of ageing and neurological health.

Images of Goyal wearing a small golden device near his right temple circulated last year, prompting online speculation. He subsequently confirmed that this gadget — named Temple — is an experimental tool designed to measure cerebral blood flow with high precision and that he had been using it on himself for more than a year.

Was so wonderful and fulfilling to spread joy and happiness to children in a school supported by @FeedingIndia. Thank you to the @letsblinkit Toys team and our partners at @Mattel, @Barbie, Skillmatics, @Imagimake, @smartivitylabs, and Mirada for making this possible pic.twitter.com/5cuoNDOgeV — Deepinder Goyal (@deepigoyal) November 14, 2025

Reports indicate that the device is intended to monitor tiny changes in oxygenation and circulation in the brain, capturing data that could help researchers study how posture, activity and lifestyle influence neurological health over time. However, it is important to note that Temple is not currently authorised as a medical device and cannot diagnose, prevent or treat any illness.

As of now, Temple remains a prototype and is not yet commercially available. Goyal has clarified that no scientific data or public release has been issued, and he has advised observers not to treat the device as a consumer product at this stage.