Ever since Apple introduced AirTags, security people have warned that they could be used for stalking. But while there have been a bunch of anecdotal stories, this is the first vaguely scientific survey:

Motherboard requested records mentioning AirTags in a recent eight month period from dozens of the country’s largest police departments. We obtained records from eight police departments.

Of the 150 total police reports mentioning AirTags, in 50 cases women called the police because they started getting notifications that their whereabouts were being tracked by an AirTag they didn’t own. Of those, 25 could identify a man in their lives — ex-partners, husbands, bosses — who they strongly suspected planted the AirTags on their cars in order to follow and harass them. Those women reported that current and former intimate partners­ — the most likely people to harm women overall — ­are using AirTags to stalk and harass them.

Eight police departments over eight months yielded fifty cases. And that’s only where the victim (1) realized they were being tracked by someone else’s AirTag, and (2) contacted the police. That’s going to multiply out to a lot of AirTag stalking in the country, and the world.

EDITED TO ADD (4/13): AirTags are being used by Ukrainians to track goods stolen by Russians and, as a nice side effect, to track the movements of Russian troops.