In an effort to limit children's access to toxic substances. special packaging opening systems Child-Resistant Packaging (CRP) have been used in a number of products.
Despite the importance of CRPs in the reduction of accidental intoxication among children. many users (mainly the elderly) experience problems in accessing the package content. Therefore, ergonomic studies on the biome-chanics of opening CRPs are needed to clarify the underlying as- pects that lead to the success or failure in CRP safety