Recordings with the "Open View Streak Technique" supply the full spatial as well as a highly time-resolved information about an event. Studies on simultaneous initiation devices (SID) are presented as an example. Such recordings can be made with a rotating-mirror streak camera, the streak slit of which can be removed, or also with an image converter camera, in this example with an IMACON type camera. The streak records give an exact information on the time and location at which a detonation in a channel is interrupted. Thus; Open View Streak Technique provides a means of detecting and eliminating sources of failure in the design and manufacture of such SID arrangements. This analog record makes it also possible to determine the detonation velocity during the entire event and in the individual portions of the path of propagation.