PORTLAND, Ore. — There is now a security guard robot patrolling the U.S. Bancorp Tower in downtown Portland. Unico officials say "Rob," the 5-foot-5-inch, 420-pound Autonomous Security Robot ...

A new mural will be guarded by “Rob,” Portland’s first autonomous security robot that looks reminiscent of R2D2 from “Star Wars.” (Source: KPTV) ...