Augur,

Augur helps security and ad-tech companies recognize devices across the internet. Augur is the first ever cross device (laptop, iPhone, iPad, Android, etc.) attribution API, which can uniquely identify a device and device owner. Augur allows our security customers to authenticate a user by device and prevent hackers from entering payment, bank, and app accounts. While also allowing our ad-tech customers to display highly personalized ads to consumers across the web.