S Nidhin
Writer, Digital Payments and Checkout Security
S Nidhin writes about how customers pay online and in store, covering UPI, mobile wallets, payment links, saved cards and the checkout page itself.
His angle is the balance between security and conversion. He looks at where steps such as 3-D Secure, OTPs, tokenised cards and passkeys add friction, where they stop fraud, and how merchants can get both right. He also covers mobile wallet security, tap-to-pay and what happens when a device with saved cards is lost.
He reviews the site’s fraud-prevention guides for how well their advice works on a real checkout.
Areas of expertise
- UPI and UPI AutoPay
- Mobile wallets and tokenization
- Payment links and checkout UX
- 3-D Secure and checkout friction
- Passkeys and mobile authentication
Writes about
Reviews
Recent guides by S Nidhin
- A Practical Guide to Implementing 3-D Secure 2 Without Killing Conversions
- Click to Pay Explained: How Secure Remote Commerce Works at Checkout
- How Tokenization Protects Your Card in Apple Pay and Google Wallet
- Passkeys and Payments: Can Phishing-Resistant Login Fix Checkout Authentication?
- SoftPOS Security: What Happens When a Phone Becomes the Payment Terminal
- Lost Phone, Saved Wallet: What Happens to Your Cards When Your Device Disappears
How we work
Every article on this site has a named author and a second reviewer, cites primary sources, and shows when it was last checked. Read our editorial policy or meet the rest of the team.
Contact: nidhin@paymentsecuritypros.com · LinkedIn