In another setback for Google Glass wearers, a chain of movie theaters is banning the high-tech specs. Tim League, the CEO of Alamo Drafthouse Cinemas, tweeted the announcement on Monday (below). Glass owners cannot wear the device inside Alamo auditoriums once the movie lights have dimmed, he explained. In response to questions from other Twitter users, League revealed that the decision is “only about piracy concerns” rather than a general disdain for Google Glass. “But on a personal level, I advocate turning off distractions during a movie,” he tweeted. Even with the ban, League seems to understand that Glass is a developing technology. Twitter user @gay4soccer asked if Glass would allowed at the theaters if it is turned off. League said Alamo would deal with that on a case-by-case basis, “but if it is clear when they are on, clear when they are off, will likely be OK.”