The present invention relates to a can opening device for allowing beverage or the like contained within a can to easily flow out. A working seal is used to seal an annulus between a well casing and a tubing to create a forcible volume between the working seal and a liquid filled column at the bottom of a well such as an oil well. The information provider computing resource has enough storage for the drug information, and enough storage and retrieval capability for the drug presentation. If the luminescence emitted changes, or if the amount of light absorbed changes, then the concentration of the analyte has changed.