A holder andor a holder and cover for containing a dispenser of a consumable product, such as a cartridge containing pressurized gas for therapeutic use, and a method for selecting the optimum parameters for such holder are provided to allow sensitive determination of the amount product remaining in the dispenser. A plurality of anchoring elements and seals are provided for respective anchoring and sealing engagement along the wall of the well in concert and substantially concurrently with one another when the tool is shifted to the set position. In addition, when a prescribed time, for example, 10 minutes, elapses after washing or drying finished, a request for permission to unload the laundry is transmitted to the user’s mobile phone 100 so as to ask the user whether the clothes can be taken out from the laundry machine 102 or not. The secure software application prompts a user requiring authentication to repeat an utterance based at least on an attribute of a selected voice biometric print, receives a corresponding utterance, requests the voice biometric authentication software module to verify the identity of the second user using the utterance, and, if the user is authenticated, imports the voice biometric print. Each SAW sensor driver board generates a continuous RF signal which emits a frequency shift if a particular chemical agent is detected. The device also includes an optional screen for providing structural stability to the nanopore membrane and for keeping the pores of the nanopore membrane clear.