OTP for transaction & action verification
A single, trusted way to confirm that the right person approved the right action — at the moment it happens.
OTP isn't just for login.
Most teams treat one-time passwords as a sign-in mechanism — and stop there. The harder problems sit further inside the product: payments, account changes, staff approvals, and the long tail of actions where you need real, verifiable consent.
Sending a fresh OTP at the point of action — and validating it within seconds — turns those moments into recorded, attributable events. The customer or staff member confirms exactly what they're agreeing to, on a channel they already trust.
Six places where in-the-moment OTP changes the outcome
Each event below benefits from a fresh, single-use code generated at the point of action and validated against the original session — not just a password set weeks ago.
High-value transactions
Payments, transfers, payouts, refunds, top-ups and currency conversions above a chosen threshold.
Account & credential changes
Password resets, email or phone updates, new device enrolment, MFA changes and recovery flows.
Sensitive business actions
Adding payees, raising credit limits, approving invoices, releasing stock or bulk data exports.
Staff approvals
Back-office sign-off, dual-control approvals, refunds at the agent desk and admin role escalations.
Confirmations & consents
Booking confirmations, contract acceptance, terms changes, GDPR opt-ins and document e-sign.
Risk-triggered events
Step-up checks when fraud signals fire — new IP, new device, unusual amount or velocity.
One pattern, repeated wherever you need it
The same generate / deliver / validate loop covers payments, sensitive changes, confirmations and staff approvals — only the trigger and the wording change.
Trigger
Customer or staff member initiates a sensitive action — payment, account change, approval, confirmation.
Generate
Your system calls /otp/generate with the channel, length, expiry and event context.
Deliver & confirm
The code is delivered over SMS or email with a clear description of exactly what is being approved.
Validate & log
/otp/validate consumes the code, the action is committed and the event is recorded against the user.
Codes are single-use, time-bound and bound to the original otpId . The OTP value itself is never returned by the API — it's stored only as a hash with a TTL, and consumed the moment it's validated. See the OTP API reference for full request and response details.
What the business gets
Verifying actions in the moment shifts risk, evidence and customer trust at the same time.
- Lower fraud losses on payments, payouts and account takeover
- Clean, time-stamped audit trail for every sensitive action
- Regulator-friendly evidence for SCA, PSD2, PCI DSS and PIPEDA-style obligations
- Fewer chargebacks and disputes — the customer signed off in real time
- Reduced reliance on heavier MFA flows for everyday actions
- One verification primitive across payments, accounts, staff tools and confirmations
What customers get
- A clear, in-the-moment signal that the action was really them
- No app install, no hardware token — just the channel they already use
- Faster approvals than email links or callback verification
- Visibility when something is being done in their name — even if they didn't initiate it
- Confidence that confirmations and bookings are genuinely confirmed
What staff teams get
- Dual control without paper or shared inboxes
- Faster manager approvals from anywhere — SMS or email
- Clear individual accountability for every approved action
- Less reliance on shared admin credentials
From implicit consent to recorded approval
Without action-level OTP
- Disputes hinge on session logs and IP guesses
- Account takeover is hard to contain after sign-in
- Staff approvals live in chats, emails and shared logins
- Customers learn about sensitive changes after the fact
With action-level OTP
- Every sensitive action carries a signed, time-stamped consent
- Step-up checks fire only when risk signals require them
- Approvals are attributable to a named individual
- Customers see and confirm changes in real time
The right person. The right action. At the right moment.
Used well, OTP isn't friction — it's the signal that turns a request into a recorded decision your business, your regulators and your customers can all rely on.
Map OTP to the actions that matter most in your product
We'll review the events worth verifying, the channels to use and how to wire it into your existing flows.