 The name Impinj stands for "Impact-ionized Hot-electron Injection".In 2006, Impinj became the first company to introduce products based on the EPCglobal UHF Gen 2 standard.Bear Stearns reported in 2006 that Wal-Mart issued contracts to Impinj and Alien Technology, including them as significant suppliers for a total 15,000 RFID readers needed for Wal-Mart stores and distribution centers.