Provide extra security for your users with RCS OTP
- Superior security for your users’ accounts
- Fast and reliable way of delivering OTPs
- Easily identified and verified accounts
Choose from flexible implementation options
Connect directly to our RCS API or let us take care of everything.
- Use the ideal authentication for every use case
- Benefit from RCS’ unique features
- Detailed API documentation and integration support
How the RCS OTP process works
Sending OTPs by RCS minimizes the chances of users being hacked since both their password and mobile device are required to access their accounts.
STEP 1
Customer logs into their account using their unique username and private password
STEP 2
This triggers an RCS message to their mobile device containing a unique one-time pin (OTP) to enable 2FA authentication
STEP 3
The customer enters the OTP into the authentication prompt on the login page
STEP 4
The identity verification process is completed successfully, and the customer can access their account securely
The benefits of RCS OTPs
Using an established and reliable messaging channel for OTP messages has functional, performance, and cost advantages.
No additional app to download
Maintain customer trust
Reduced costs
Effective failover
Most popular use cases for sending OTPs via RCS
How our customers used RCS OTP
Digitaleo: Introducing RCS Business Messaging to clients .
-
72%
Higher conversion rate . -
10%
Lower cost per click . -
3x
Higher conversion rate .
nextbike: Innovating transactional use cases with a secure and engaging rich messaging approach .
-
90%
secure delivery rate .
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RCS OTP vs SMS OTP
Here is how RCS compares to SMS when it comes to sending OTP messages.
| Feature | RCS OTP | SMS OTP |
|---|---|---|
| Delivery | Native chat app (Google Messages on Android, can be activated on iOS) | Cellular SMS |
| Sender | Verified, branded sender with logo and name | Numeric sender ID, less brand visibility |
| Security | Enhanced (anti-spoofing features) | Basic, more susceptible to phishing |
| User experience | Rich, interactive messaging (buttons, branding, images) | Plain text only |
| Cost | Often lower than SMS for bulk sending | Varies, can be higher depending on region |
| Failover | Automatic SMS fallback if RCS undeliverable | SMS only |
| Analytics | Read receipts and engagement metrics available | Limited delivery reports |
Frequently asked questions about RCS OTP
RCS OTP uses Rich Communication Services to send one-time passwords with verified branding, native mobile integration, and enhanced security features, unlike plain text SMS which can be easier to spoof. RCS allows interactive features like copy code buttons, verified sender logos, and branded colors, while SMS is limited to simple, unbranded text.
Yes. RCS offers verified business sender profiles and encrypted channels, making it much harder for fraudsters to spoof messages and reducing susceptibility to SMS phishing (smishing) attacks. Users see your brand’s name and logo, so they can trust the source.
If an RCS OTP can’t be delivered within a validity period you define (e.g., 2–4 seconds), it automatically fails over to SMS, ensuring your customer still receives their OTP and their experience is never interrupted.
No. RCS is natively supported on Android devices through Google Messages or Samsung Messages, with no app download required. Plus, Apple’s RCS support is expanding, meaning reach is only getting wider.
RCS offers features like branded interfaces, clickable “Copy Code” buttons for instant code entry, and interactive message flows. These enhancements make it easier and faster for users to complete their authentication, which means no more manually typing or copying lengthy codes.
Absolutely. Branded sender verification and rich message content make RCS OTPs much more difficult to spoof or phish than SMS, protecting both your business and your customers.
You can track delivery, read, and interaction rates in real time. This visibility helps you quickly identify any delivery issues or user experience bottlenecks. Learn more about RCS analytics here.
Infobip provides robust RCS APIs and ready-to-use integrations, so you can implement RCS OTP with minimal development effort. Our solution also supports omnichannel flows, meaning you can combine RCS and SMS seamlessly.
Finance, eCommerce, healthcare, telecommunications, and any regulated or security-conscious industry can boost both security and customer satisfaction with RCS OTP.
No new opt-in is needed if users are already opted into SMS. You can seamlessly upgrade to RCS for supported devices.
