Altierre has raised an additional $8 million as part of its previously announced third round of funding. Full-told, the maker of RFID shelf-tagging systems has now raised $30 million in its third round, which was announced two months ago.

Previous investors D. E. Shaw and Labrador Ventures participated in the $8 million second closing. The company has raised $60 million to date. Other investors include ATA Ventures, DuPont Capital Management, Galleon Group and Kinetic Ventures.

The San Jose, Calif., company, founded in 2003, makes a system for retailers that lets them change prices through radio chips on store shelves.