Patent ID: 7495569
Filing Date: 2009-02-24
Classification: G08B

Abstract:
1. A method for verifying and monitoring hand washing and sanitizing practices comprising the steps of: measuring skin surface pH of at least one of a hand and a lower arm of a user, wherein measuring skin surface pH of said at least one of a hand and a lower arm of said user comprising the steps of: comparing said skin surface pH of said at least one of a hand and a lower arm of said user with a predetermined skin surface pH range, wherein a measured skin surface pH below the predetermined pH number on said skin surface pH range indicates that said at least one of a hand and a lower arm of said user being improperly washed and wherein a measured skin surface pH above the predetermined pH number on said skin surface pH range indicates that said at least one of a hand and a lower arm of said user being properly washed; reading a first measurement of a first skin surface pH from said pH measuring device; reading a second measurement of a second skin surface pH from said pH measuring device; calculating a skin surface pH ratio of said first measurement of said first skin surface pH to said second measurement of said second skin surface pH; and comparing said skin surface pH ratio of said first measurement of said first skin surface pH to said second measurement of said second skin surface pH with a predetermined skin surface pH ratio range, wherein a measured skin surface pH ratio below the predetermined skin surface pH ratio on said skin surface pH ratio range indicates that said at least one of a hand and a lower arm of said user being improperly washed, and wherein measured skin surface pH ratio above the predetermined skin surface pH ratio on said skin surface pH ratio range indicates that said at least one of a hand and a lower arm of said user being properly washed.