Your client portal sits at 12% adoption. They've got the link, they know it exists, but the login wall stops them cold. Half get stuck at 'forgot password', another quarter give up after two mistyped attempts, and the rest never come back. The problem isn't the portal itself—it's the password. SMS OTP (one-time password) login removes that friction entirely. No password to remember, no reset emails, no account lockouts. A text arrives, they tap six digits, they're in. We've seen adoption climb from 12% to 28% in six weeks with nothing else changed. Here's why it works, how to set it up in Orin, and what you need to know about SE Asia compliance. The mechanics: why passwords fail where SMS succeeds A password is a commitment device. Your client has to remember it, type it correctly, and do that every single time they log in. Behaviorally, that's three separate friction points: Memory load: They use 50+ passwords across their work life. Yours is number 47. They forget it. Typo penalty: One uppercase letter wrong and they're locked out. The reset email takes 5–15 minutes. Repeat friction: Even if they remember it once, they forget it again next month. Every login is a potential reset. SMS OTP collapses all three. The authentication happens on a device they always have (their phone), in a channel they check constantly (SMS), and requires zero memory. A text lands, they see six digits, they paste it or type it in 8 seconds. Done. The average user takes 45 seconds to reset a password. With SMS OTP, that drops to 12 seconds including the wait for the text. The psychology shift is huge: one moment of friction versus three. The adoption lift isn't magic. It's the removal of a single high-friction moment that was killing 76% of first-time logins. When that wall disappears, people actually use the thing. Setting up SMS OTP in Orin: the implementation path Orin handles SMS OTP natively—no separate integrations, no third-party auth layers. Here's the setup: Step 1: Enable passwordless login in account settings Go to Account → Security → Authentication Methods Toggle Enable SMS OTP Login Select your SMS provider (Orin integrates Twilio, AWS SNS, and regional SE Asia providers like Nexmo and local carriers) Set OTP validity to 10 minutes (long enough to receive and enter, short enough to block replay attacks) Choose: SMS-only, or SMS + email fallback (we recommend SMS + email for enterprise clients with older phones) Step 2: Configure the client portal login page Go to Portals → [Your Portal] → Login Settings Under Authentication Method , select SMS OTP + Backup Email Add your company logo and custom message (optional but recommended for familiarity) Set login redirect: where clients land after authentication (usually the dashboard or contracts view) Step 3: Invite clients and test When you invite a client to the portal, they receive an email with a one-time setup link. They click it, set their phone number, and the SMS OTP flow activates immediately. On next login, they choose SMS and get a text with a code. Test yourself: log out, try logging back in via SMS. The text should arrive in 2–8 seconds depending on your provider. If it's slower than that, check your SMS provider's queue depth or switch to a faster regional carrier in SE Asia. Step 4: Roll out gradually to high-value clients first Don't flip SMS OTP on for all 500 clients at once. Start with your top 20–30 active users. Let them experience the faster login, hear their feedback (usually "this is so much easier"), then expand to inactive users. The second wave—people who abandoned the portal—will see the friction gone and often return. Client communication: the template that drives adoption Clients need to understand why this changes. A vague "we've updated our login" email lands flat. Here's what works: Subject: Your portal login just got faster (no password needed) Hi [Name], We've made it easier to access your contracts and documents. No password to remember anymore—just a quick text code. How it works: 1. Go to [portal link] 2. Enter your phone number 3. Get a text with a code 4. Paste the code and you're in Total time: 20 seconds. No emails, no resets, no lockouts. If you have questions, reply to this email or call [number]. We're here. [Company] That's it. Simple, concrete, no jargon. Send it the same day you activate SMS OTP for their account. Then watch: logins will spike within 48 hours because the barrier is gone. SE Asia compliance: what you must know If your clients are in Malaysia, Singapore, or Indonesia, there are compliance rules around SMS, data retention, and authentication. You need to address them: Malaysia (BNM, MyINVOIS) SMS as authentication: BNM allows SMS OTP as a valid secondary authentication method for financial transactions (including contract e-signature). You don't need extra approval. Data retention: Keep logs of all SMS OTP attempts for 90 days. Orin does this by default; check your compliance dashboard under Account → Audit Logs