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WhatsApp's newest feature -- the ability to lock the app with Face ID or Touch ID -- appears to have a major security flaw.

A Reddit user discovered the issue on iOS when using the share sheet (the menu that pops up when you tap the share icon in an app) of to open WhatsApp. Unless you've set your app to require biometric login immediately, the time interval will reset, and the Face ID or Touch ID won't launch.

SEE: What's up with WhatsApp: Is it still the cream of the messaging app crop

WhatsApp wasn't immediately available for comment, but representatives of the Facebook-owned app acknowledged the bug to Reuters and said the company was working to solve the problem.

"We are aware of the issue and a fix will be available shortly," a WhatsApp spokesperson told Reuters. "In the meantime, we recommend that people set the screen lock option to 'immediately.'"

WhatsApp began beta testing the lock features last month. The ID lock options were designed to protect conversations and information on the app in case a user's device was unlocked.

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  1. A Reddit user found a bug in WhatsApp's ability to lock its app with Face ID or Touch ID. The new security features went live earlier this month after beta testing.
  2. WhatsApp confirmed to Reuters that it was working on fixing the problem.

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Shelby is an Associate Writer for CNET's She served as Editor in Chief for the Louisville Cardinal newspaper at the University of Louisville. She interned as Creative Non-Fiction Editor for Miracle Monocle literary magazine. Her work appears in Glass Mountain Magazine, Bookends Review, Soundings East, and on Her cat, Puck, is the best cat ever.