#engineering

2 posts

Under the Hood

#aadhaar#identity#scale#engineering#infrastructure

How Aadhaar Deduplicates Biometrics at Billion Scale

How Aadhaar's ABIS deduplicates biometrics at billion scale: fingerprint templates, iris codes, sharded search, multi-engine consensus, and score fusion.

Ashish Mar 31, 2026 4 min read
Under the Hood

#ux#product#security#engineering#mobility

Why Rapido Uses a Static PIN (Rapid OTP Trade-offs)

Rapido's fixed 4-digit Rapid PIN vs dynamic OTP: UX, SMS cost, and why physical pickup context matters more than brute-force odds.

Ashish Mar 30, 2026 3 min read