IIT-Madras startup launches smart ring enabling contactless RuPay payments

The moment you remove it, all transactions shut down.
Ring One's security design ensures payments only work when the device is physically worn.

From a laboratory at IIT-Madras, a small Chennai startup has placed something ancient — the ring, worn on the finger as a mark of trust and identity — into the service of modern commerce and health. Muse Wearables has launched Ring One, a device that quietly pays for things by touch, drawing on India's own RuPay network rather than the platforms of foreign giants. It is a small object carrying a larger question: whether a nation can author its own financial future, one encrypted token at a time.

  • A finger ring that replaces your wallet entirely — no phone, no card, no friction — has arrived in India, and it works right now in over 40 countries across 600 banks.
  • The security architecture is deliberately paranoid: a bank-grade Secure Element chip stores only encrypted tokens, your real card number never travels, and the ring goes dead the moment it leaves your finger.
  • Behind the hardware is a sovereignty argument — Muse Wearables is explicitly positioning Ring One as India's answer to the foreign tech giants that currently dominate digital payments infrastructure.
  • The company has named its platform India's first Secure Element Tokenisation Platform and is targeting millions of RuPay cardholders as primary users within two years.
  • The real test is not technical but human — whether Indians will trust their money to a ring, and whether banks and merchants will build the acceptance layer to meet them.

A Chennai startup born from IIT-Madras has launched Ring One, a wearable device that merges health monitoring with contactless payments — no phone, no card, no wallet required. The ring connects to a user's bank account through India's RuPay network, in partnership with the National Payments Corporation of India.

The technology is quietly sophisticated. When a RuPay card is added through the Muse App, the system generates a unique digital token, encrypts it, and stores it on a Secure Element chip inside the ring — the same hardware standard used in bank cards and passports. At any NFC terminal, the ring completes the transaction without ever revealing the actual card number. Your real credentials never leave the chip.

Security is woven into the physical object itself. The ring only functions while worn; remove it, and all transactions cease. A lost or stolen ring holds a dormant token that cannot be activated without personal authentication. The Secure Element also operates in isolation from the phone's operating system, meaning a hacked phone cannot compromise the ring's payments.

Co-founder and CEO K L N Sai Prasanth framed the launch as a declaration: India can build world-class financial technology on its own terms. The company calls its infrastructure Muse Wallet — India's first Secure Element Tokenisation Platform — and the product is already live in more than 40 countries supporting nearly 600 banks.

The ambition is to make wearable payments the primary transaction method for millions of RuPay cardholders within two years. Ring One bundles two everyday desires — health tracking and frictionless spending — into a single object. The hard problems of cryptography and banking infrastructure have been solved. What remains is the more human challenge of trust, and whether a ring on your finger can become the place where your money lives.

A Chennai-based startup has built a finger ring that does something simple and strange: it lets you pay for things by tapping your hand. Muse Wearables, which grew out of IIT-Madras, has launched Ring One—a wearable device that combines health monitoring with contactless payments, all without requiring a phone, card, or wallet. The ring works by connecting to your bank account through the RuPay network, India's homegrown payments system, in partnership with the National Payments Corporation of India.

The mechanics are elegant. When you add a RuPay credit or debit card to the Muse App, the system generates a unique digital token for that specific card. This token gets encrypted and stored on a Secure Element chip embedded inside the ring itself—the same grade of hardware security used in bank cards and passports. When you tap the ring at an NFC payment terminal, the chip executes the transaction without ever exposing your actual card number. The payment system never sees your real credentials; it only sees the encrypted token, which is useless to anyone who doesn't have your authentication.

Security is built into the physical design. The ring only works when worn on your finger. The moment you remove it, all transactions shut down. If the ring is lost or stolen, the token inside remains dormant and inactive without your personal authentication—making it essentially a piece of inert metal in someone else's hands. The company has thought through the failure modes: the Secure Element isolates sensitive financial data from your phone's operating system and apps, meaning a compromised phone cannot compromise your payments.

Ring One is not a prototype or a pilot. The device is already available in more than 40 countries and supports cards from nearly 600 banks worldwide. What Muse Wearables is doing now is bringing that existing technology home to India, positioning it as a sovereign alternative to the foreign tech giants that dominate digital wallets globally. K L N Sai Prasanth, the company's co-founder and CEO, framed the launch as a statement: India can build world-class financial technology without depending on foreign platforms. The company is calling its payments infrastructure Muse Wallet, which it describes as India's first Secure Element Tokenisation Platform.

The ambition is clear. Within two years, Muse Wearables aims to enable millions of RuPay cardholders to use wearable payments as their primary transaction method. The ring combines two consumer desires—health tracking and frictionless payments—into a single device you wear every day. It's the kind of product that seems obvious in hindsight: why shouldn't your health tracker also be your wallet? But building it required solving hard problems in cryptography, hardware security, and banking infrastructure. The company has solved them. What comes next is adoption—whether Indians will trust their money to a ring on their finger, and whether banks and merchants will build the infrastructure to accept it.

We are taking on foreign tech giants in the digital wallet ecosystem by creating a truly sovereign alternative for India. This proves that world-class technology can be built right here in India.
— K L N Sai Prasanth, co-founder and CEO, Muse Wearables
The Hearth Conversation Another angle on the story
Inventor

Why does a health ring need to handle payments at all? Couldn't these be separate devices?

Model

Because you're already wearing it every day. If the ring is on your wrist, it becomes your most accessible payment method. You don't need to find your phone or dig for a card. It's just there.

Inventor

But isn't that a security risk? Putting your money and your health data on the same device?

Model

Not if you architect it right. The payment token is encrypted and isolated on a dedicated chip—the Secure Element. Your health data lives elsewhere. They're physically separated, so compromising one doesn't touch the other.

Inventor

What happens if someone steals the ring?

Model

It's useless to them. The token inside is encrypted and requires your authentication to activate. Without that, it's just a piece of metal. And you can disable it instantly through the app.

Inventor

Why does India need its own version of this? Isn't the technology already proven globally?

Model

Yes, but it's proven in foreign hands. This is about sovereignty—building the same capability domestically, using India's own payment rails. RuPay instead of Visa or Mastercard. Indian infrastructure, Indian control.

Inventor

How realistic is the two-year timeline for millions of users?

Model

That depends on merchant adoption and consumer trust. The technology works. The harder part is getting enough NFC terminals in stores and getting people to believe a ring is safer than a card.

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