The report landed less than a month afterLife360 bought Tile, a well-known location tracking company.

But this report reveals the extent to which Life360 is failing to sufficiently anonymize the data it sells.

All of our partners have extremely strict contractual limitations to ensure privacy."

Life360 has 31 million users, with subscription levels that range from free to $20 per month.

The spokesperson said about 80 percent of its users opt for the free version.

The acquisition positions Life360 to significantly expand its influence in the location tracking and data sales industries.