4 docs tagged with "OTP"

One-time codes: sending, the lifetime of a code and checking what the subscriber typed.

Send OTP Code (Telegram)

An example of a request to send a one-time password (OTP) via Telegram.

Send a one-time code to WhatsApp with an authentication template, optionally with an SMS fallback.

API for creating and verifying one-time passwords (OTP) via SMS, Email and other channels.

This user authorization mechanism (action confirmation) is the simplest for the subscriber and the cheapest and most flexible for the client.