PORTLAND, Ore. — There is now a security guard robot patrolling theU.S. Bancorp Tower in downtown Portland. Unico officials say "Rob," the5-foot-5-inch, 420-pound Autonomous Security Robot (ASR ...

The mural and surrounding area will be guarded by “Rob,” the city’s first autonomous security robot that looks reminiscent of R2D2 from “Star Wars.” Rob will provide 24/7 surveillance of ...