Apple has quietly launched a dedicated indoor positioning app on iOS, letting business owners map out their venues using just their iPhones. The Indoor Survey App was first spotted on the App Store by developer Steve Troughton-Smith, and although it doesn’t appear in search, it’s accessible to some via a direct link.
“Enable indoor positioning within a venue using the Indoor Survey App,” reads the description on iTunes. “By dropping ‘points’ on a map within the Survey App, you indicate your position within the venue as you walk through. As you do so, the Indoor Survey App measures the radio frequency (RF) signal data and combines it with an iPhone’s sensor data.”
This article originally appeared on Recode.net.