SAN JOSE, Calif. (KGO) -- A new code is ready to be cracked atop Adobe's headquarters. In downtown San Jose atop Adobe's Almaden Tower, is Adobe's San Jose Semaphore. The revolving four circles are ...

The LED screen is 70 feet wide and contains four lighted disks, each 10 feet in diameter, with a line down the middle. Each disk can assume four positions, and the positions change every 7.2 seconds ...

SAN JOSE — High above downtown San Jose, Adobe has launched a new semaphore puzzle contest to serve as the tech titan’s latest tricky optical telegraph that challenges people to crack its code. The ...