Lucent · OTP Login & Notify
One less password between your customers and checkout
Let shoppers log in with a one-time code sent by SMS, WhatsApp, or Email — no passwords to create, forget, or reset.
Preview of the actual Simply OTP widget: a customer enters their phone number, requests a one-time code, verifies it, and is logged in.
How OTP login works
The same simple flow every time — for a first-time customer or a returning one.
Enter phone or email
The customer enters their phone number (country code auto-detected) or email address.
Code sent instantly
A one-time code is sent via SMS, WhatsApp, or Email — whichever channel the store has configured.
Customer verifies the code
The customer enters the code. First-time or incomplete profiles see one short extra step to finish creating their account.
Logged in — instantly
No password prompt, no reset link, no lost customer. They're straight into their account.
One login system, three different jobs
Signing in, wholesale onboarding, and the notifications that follow — all running on the same OTP infrastructure you set up once.
Built for mobile-first markets
Phone-based login is a natural fit for stores selling in India, the Middle East, and Southeast Asia, where typing a password on mobile is friction customers skip.
No more lost logins
Customers who forget which email or password they used stop abandoning checkout — a code sent to their phone or inbox gets them straight back in.
Self-service B2B onboarding
Wholesale customers register their company and get approved without back-and-forth emails with your team.
Automated, on-brand messaging
Order confirmations, shipping updates, and cart-recovery reminders go out automatically, on the channel each customer prefers.
From first login to the invoice
Six areas — login, onboarding, notifications, customer data, billing, and customization — each with its own settings, so you only touch what's relevant.
Passwordless Login
Replace passwords with a one-time code over SMS, WhatsApp, or Email.
B2B Wholesale Onboarding
Self-service company registration with approval built in.
Automated Notifications
Order and account messages sent automatically, on your terms.
Customer Data & Insights
See and manage every customer and every OTP sent.
Flexible Billing
Pay only for what you actually send.
Widget Customization & Integrations
Make it yours, and connect it to your own systems.
Protection that's already turned on
A defense stack most stores would have to piece together themselves — already built in.
Rate limiting & breach detection
40 OTP requests per store per minute by default, with a three-strike breach system that escalates automatically — and fails open, never blocking real customers, if it ever errors.
Smart CAPTCHA escalation
Invisible by default, only asking a customer to prove they're human when suspicious activity is actually detected — then removed automatically once things settle down.
Suspect store monitoring
A dedicated service continuously checks verification ratios across every store, automatically enabling extra protection and releasing it again within 24 hours of activity returning to normal.
Webhook & API security
Every webhook is HMAC-SHA256 verified, API calls are timeout-protected, and requests automatically back off and retry if Shopify's rate limits are hit.
Token security & auto-renewal
Access tokens refresh themselves before they expire, with all API keys, secrets, and passwords encrypted at rest.
GDPR-ready
Customer Data Request, Customer Data Deletion, and Store Data Deletion webhooks are all cryptographically verified.
Frequently asked questions
Straight answers before you install.
Does OTP login require Shopify Plus?
No — passwordless OTP login itself works on any Shopify plan. Shopify Plus is only required for the optional Identity Provider (OIDC) / SSO feature, which replaces Shopify's native login entirely and requires the store to be on Shopify's New Customer Accounts.
Which channels can send the one-time code?
How does billing work?
What happens if my store gets flagged for suspicious OTP activity?
Can I use OTP login alongside B2B wholesale accounts?
Lucent · OTP Login & Notify
Ready to give your customers a login they won't abandon?
Install Simply OTP in minutes, or talk to us first — either way, we'll help you get set up.