Provided is a system and method for sending a \u201cvoice message\u201d to a recipient without any intervention of a network. The present invention also relates to processes for the synthesis of 5-fluoro-1H-pyrazolo3,4-bpyridin-3-amine derivatives. The pressure-sensitive adhesive tape of the present invention is also useful for binding. The mattress system has a bed exit alarm system that, when armed, provides a bed exit alarm if the pressure sensor in the mattress detects that a patient has exited the mattress.