Spy module

During research into certain properties of space-time, an interesting effect was discovered: by replacing one dimension with another, it is possible to place an object in a kind of temporal field that allows it to move through ordinary space completely unnoticed. After several experiments, an object could be kept stably in the temporal field; however, when the field was destroyed the object appeared in present time only briefly and then departed into the distant future, which led to the destruction of all specimens. The module and the ship on which it is installed are essentially disposable.