Freckle IOT, the leading first-party mobile data company, announces the release of its agnostic in-store Attribution Tag and its operational support by the world’s five largest demand-side platforms (DSPs): AppNexus, The Trade Desk, MediaMath, TubeMogul, and Adelphic. The endorsement by these key channel partners creates the foundation for the fulfillment of Freckle’s mission to provide an industry-standard agnostic verification platform to audit the effectiveness of a brand message to drive a customer to visit a designated location.