# WhatsApp Auth — zero-tap login, picked for you

> An OTP arrives through WhatsApp, the SDK reads it on-device and submits it automatically. Zero taps, sub-second verification, 95%+ Android auto-read, ~20× cheaper than international SMS.

## How it works
The OTP is delivered over WhatsApp; the OTPless SDK reads and submits it on-device. The user taps nothing. Strong coverage in India, LATAM, MENA, and SEA.

## FAQ
**What is WhatsApp Auth?** An OTP delivered through WhatsApp that the SDK reads and submits automatically — a zero-tap, sub-second login.
**Is it cheaper than SMS?** Roughly 20× cheaper than international SMS and about 50% cheaper on typical routes.
**Does it auto-read the code?** On Android, 95%+ of codes are auto-read with no user action.

Talk to our team: https://otpless.com/talk-to-sales.html