A method of storage management in document databases wherein residence times are assigned to individual documents on entry to the database. Each end cap carries a flexible polypropylene strip which has a free end extending from the periphery thereof to engage in a selected one of a series of grooves in the inside periphery of the hand wheels. The method further includes generating a film of the cinematographic type by using as individual frames one or more images of the sequence and displaying the film for visually verifying the dynamic-morphologic behavior of organs of the pelvic floor. The relying party device reverts the machine readable form back to the one-time password, and transmits the one-time password to the authentication platform to authenticate the user device.