Google Glass was "one of the coolest, futuristic things I've ever touched," said Peter Pham, a partner at Science Inc., who got an early trial of the device. Pham described the glasses as a lightweight, "not uncomfortable" feel that was convenient and easy to use. "Basically, it was tethered to my Android phone. So everything I was looking at -- whether taking photos, shooting video or searching -- was from the data connection on my cellphone," Pham said. A preliminary list of the more than 4,000 people Google has chosen to experiment with the glasses shows an array of creative types, developers and marketers.