I'm working on a supervillain who has the ability to teleport. At some point in the story, she gets arrested and is held in a special cell designed to negate her ability. I want to make absolutely sure that the current setup of the cell is flawless, so I'd like to get some feedback on any flaws in the design and how it might be improved. First, a breakdown on how the villain's power works. * She can teleport any distance even to the opposite end of the planet. * She can only teleport to places she's been before, relative to Earth. * The teleportation is instant with no flashy visuals or sounds. * When she teleports, any physical matter at her destination swaps places with her. Therefore, if she were to hypothetically teleport into a wall, the pieces she replaced would appear at her inital point. * She cannot teleport if someone is looking at her or her destination. If just one person is watching her, this isn't a problem because the person has to eventually blink. It's more difficult around multiple people, however. * Looking at her through anything transparent like glass, or reflective like a mirror, is considered enough to hinder her teleportation. * She can teleport in front of a camera, and doing so distorts the footage. (Imagine Slender: The Eight Pages.) Now here are the specifics of her cell. * She's in a cubical cell made of glass with dimensions of 10'x10'x10', which itself is in the middle a large, round auditorium. * One hundred people, called observers, sit all around the auditorium. Their sole job is look directly at her in the cell to make sure she can't teleport. The observers constantly rotate shifts every two hours, and get relieved five people at a time so the crowd doesn't get distracted all at once. * The observers are forbidden from bringing any electronics into the auditorium, especially cell phones. Anyone caught violating this rule will not only be fired, but also put on trial for conspiring to help the prisoner escape. * Eight guards stand by with sniper rifles, ready to shoot the prisoner if she tries anything. * The cell itself is fitted with a bed and a toilet. * There is no shower, as the steam could cover the glass. Instead she's provided with dry bathing lotion and wipes. * Finally, the prisoner is only allowed to wear shorts and a sleeveless shirt, and her bed has no sheets or blankets. This is to ensure she can't cover herself up and teleport. So, with the current rules of her abilities, do the precautions taken with her cell seem sufficient enough to properly contain her? Are there any ways these methods could be improved? Note, she does eventually escape, but that's thanks to a special circumstance I refuse to spoil here.