Patent ID: 8525666
Filing Date: 2013-09-03
Classification: G08B,G16H

Abstract:
1. A system for monitoring hand hygiene of a subject, the system comprising: a handwashing agent comprising a taggant to generate a volatile or semi-volatile handwashing adherence marker, HWAM; a detector comprising a sensor; and an indicator operably connected to the sensor; wherein the sensor is capable of detecting the HWAM without physical contact of the hands of said subject with said detector, the indicator communicates information from the sensor regarding whether there has been an HWAM detection, said HWAM being detectable by said sensor on or emanating from the hands of a subject immediately or within a short period of time after a handwashing event utilizing said handwashing agent comprising said taggant, wherein said taggant in said handwashing agent is contained within hard particles, soft particles, or both; wherein said particles are microencapsulated particles housing taggants wherein said particles are made using microencapsulation techniques selected from the group consisting of coacervation, double emulsion (w/o/w), polymerization, co-extrusion capsule formulation, and air-suspension coating; wherein said microencapsulated particles are made by double emulsion utilizing poly L-lactic acid (PLLA) dissolved in methylene chloride, and emulsified with an aqueous or other incompatible solvent containing said taggant.