Disclosed herein are pro-perfume compositions comprising the reaction product of a primary andor secondary amine compound with a combination of a perfume ketone component and a high molecular weight, high boiling point perfume aldehyde component. For part 1 data encoding, a mask may be generated using a wireless transmitreceive unit identity and a generator matrix with a maximum minimum Hamming distance. The overlay may be configured to provide one or more Braille keypads located above input keys on an existing keyboard of the device such that when a key in the Braille keypad sections is pressed, the pressed key contacts and presses one or more input keys located below the pressed Braille key. The drive is operable in a non-uniform manner in a collecting mode of the folding machine to supply a first and a second exemplar of different sheet lengths and is operable in a uniform manner in a non-collecting mode of the folding machine. Upon such activation of the PSD, the computerized system engages in a security operation using the cryptographically secured data from the PSD to enable the protected function to be performed under control of the user on the computerized system.