Sat on the train at a table seat next to another woman. I've had my head in my book so not noticed what she's been doing. I looked up for a split second and saw that she had just taken a photo of me on her forward facing camera on what I can only assume is snapchat (never used it). It looked like an app she was using and not her normal camera. She immediately saw that I had noticed and before I had time to say anything she had stood up and moved to a different carriage. AIBU to think that a) this is incredibly rude and to also wonder b) why on earth would she take a photo of ME? Do I look rough/good today? It's creeped me out a little and I'm annoyed I didn't grab her and ask her to remove it. I blame baby brain and my zombified/tired state!