A simply-structured movable step for a motorcycle. Elastic fibers are disclosed which have a relatively flat modulus curve, for example between 100% and 200% elongation. The soft ferromagnetic film structure has one or more edges exhibiting edge stress anisotropy. The first entity has first policy data corresponding thereto and the second entity has second policy data corresponding thereto. If the canary thread returns within a predetermined timeout period, then the one or more synchronization objects are available and safe to take.