Uber may be testing a feature that would let passengers who felt unsafe record their driver's voice and report the incident to the company.

Jane Manchun Wong, who reverse engineers apps, tweeted Monday that Uber is testing a tool called "Record Audio" for people "uncomfortable with the ride." Wong was one of the first to discover that Instagram tested hiding likes months back.

Wong tweeted that she didn't test Uber's beta-test feature because she was in an "actual Uber ride" when she discovered it.

According to Wong's screenshot of the Uber app, the feature appears to be a part of the company's "Safety Toolkit," which includes sharing the trip status with family and friends, reporting issues and contacting police.

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Uber representatives weren't immediately available for comment.

In September, Uber rolled out RideCheck, a system designed to flag unusual events such as long stops or car crashes to keep passengers and drivers safe – an action taken after several high-profile assault scandals.

Over the past two years, the company has bolstered efforts to make riders feel safer after dealing with a murder case and sexual assault complaints against drivers.

This year, a South Carolina college student was killed after getting into a car she mistook for an Uber. Last year, Denver police said an Uber driver fatally shot a passenger.

Also in 2018, female riders accused the ride-sharing firm of poor driver vetting that led to thousands of passengers enduring sexual harassment and rape.

Follow Dalvin Brown on Twitter: @Dalvin_Brown.