From All Systems Red by Martha Wells (pp.143-144)

The thing that surprised me is that nobody stared at us. Nobody gave us a second look. The uniform, the pants, the long-sleeved T-shirt and jacket, covered all my inorganic parts. If they noticed the dataport in the back of my neck they must have thought I was an augmented human. We were just three more people making our way down the ring. It hit me that I was just as anonymous in a crowd of humans who didn’t know each other as I was in my armor, in a group of other SecUnits.