Read the full article here
Why passkeys are a conversion and revenue lever
Passkeys are often introduced as a security upgrade, but their biggest impact in B2C flows is usually conversion rate. They remove the most common sources of login friction: forgotten passwords, typo-heavy mobile input, and slow fallback flows. For product teams working on CIAM, this matters because retention and repeat purchases drive lifetime value. With rising CAC, improving the authentication experience for returning users can be just as important as optimizing first-time sign-up.
In practice, passkeys turn authentication into a faster, higher-success step that keeps users in the purchase funnel instead of pushing them into password resets or OTP loops.
Case study: how KAYAK used passkeys for conversion optimization
KAYAK is one of the early large-scale passkey adopters in consumer authentication. Public case studies report two outcomes that are especially relevant for conversion work:
- Strong adoption during sign-up, with a large share of new users choosing passkeys when offered.
- Faster sign-up and sign-in, with reported reductions in end-to-end time.
KAYAK also used a pragmatic fallback approach for users who could not create a passkey, keeping the experience passwordless where possible instead of forcing users back to a password wall. The key lesson is not that every user will switch instantly, but that a passkey-first default can shift behavior quickly without breaking existing flows.
Benchmarks: passkeys outperform passwords on success rate and speed
Across multiple deployments, industry benchmarks show a consistent pattern: passkeys tend to deliver a much higher authentication success rate than passwords, and they complete faster. That matters for checkout because login is often the steepest drop-off point for returning customers.
Two numbers that often show up in passkey adoption reporting:
- Higher login success rate with passkeys compared to passwords, driven by the removal of memory and typing errors.
- Shorter time-to-authenticate, which reduces abandonment on mobile and in time-sensitive purchase moments.
Even if your product already has strong checkout analytics, you often need authentication-specific measurement to see where those gains come from, and whether they hold across devices and operating systems.
Four checkout growth levers passkeys unlock
- **Increase login success rate at the checkout gate **Checkout login is where users have already decided to buy. If authentication fails, they rarely “try later.” Passkeys improve this step by removing the “wrong password” loop and enabling biometric sign-in that users cannot forget. When implemented with UX patterns like passkey autofill (Conditional UI) or one-tap entry points, passkeys can also reduce drop-off caused by users forgetting which email they used.
- **Reduce time-to-purchase with faster authentication **Speed matters most on mobile, where typing is error-prone and context is distracting. Passkeys replace multi-field input with a short biometric step, which can materially reduce time spent in the login portion of checkout. This becomes even more relevant in flash sales or limited inventory scenarios where slow login can erase the benefit of strong merchandising or scarcity tactics.
- **Eliminate password reset abandonment **Password resets are a conversion killer because they force users into a long recovery journey at the worst moment. Many consumers abandon purchases when they cannot remember credentials, and the reset flow adds more drop-off points (email delays, spam folders, password rules). Passkeys remove the reset loop for users who have created one, keeping high-intent customers moving toward payment.
- **Convert guest checkout buyers into logged-in customers **Guest checkout exists largely because account creation is too much work. Passkeys change that trade-off: creating an account no longer requires inventing and remembering a new password. A common approach is to prompt users after purchase with a simple value proposition like “Save your details for faster checkout next time,” then let them create a passkey in seconds. This can increase the share of logged-in customers over time, improving retention and LTV without adding friction to the first purchase.
What to measure to prove ROI
To make passkeys a conversion initiative (not just a security project), track metrics such as login success rate, time-to-auth, auth funnel drop-off, and fallback rate across passkeys vs passwords and OTP. Segment by device and OS so you can spot where performance differs and where UX improvements will have the biggest impact.
Read the full article here
Top comments (0)