"police regularly tell arrestees that the photographs are mandatory"

Unlike many of the other defendants with whom they shared cells, the protesters could feel confident that they would soon be released -- Occupy posts bail for those arrested during movement actions.

But protesters and their legal advisers were surprised yesterday to learn that the size of their bail was being affected by whether defendants were willing to have the distinctive patterns of their irises photographed and logged into a database.

Police and courts have been photographing irises since 2010, once at booking and once on arraignment. The practice is a response to a couple of instances in which mistaken identity allowed someone facing serious charges to go free by impersonating another defendant up on minor charges.

Read More | "As Occupy Arrestees Arraigned, Iris Scans Affect Bail" | Nick Pinto | ?The Village Voice