Determination of the shock sensitivity of a material intended for practical use is one important aspect of safety testing of explosives.
Some other compounds with a high sensitivity to shock, such as nitroglycerin and acetone peroxide, may detonate from a firm jolt and so cannot be legally transported in pure form.
Acetone peroxide is often used by amateurs and terrorists as a means to detonate other explosives as well as acting as the main blasting agent, often resulting in injuries or death to those who underestimate its sensitivity.
Many practical commercial materials of intermediate sensitivity, such as gelignites and water gel explosives, can be safely handled as they will not explode from casual shocks such as being dropped or lightly knocked by a tool.
Apart from this another explosive material such as Armstrong's mixture is also used in commercial markets and even sold to the public in the form of fireworks, cap guns and party poppers.