Posted By Jonathan Breeze Oh it's Biometrics, I thought you meant one of those games you occasionally see at the funfair! To answer the question asked, there should be no greater problem than say general hygiene issues related with WC door handles or lift buttons, i.e. ensure the cleaner cleans them regularly and ensure that staff have good personal hygiene. However I suspect there is an underlying problem here - probably to do with civil liberties, which management may need to address.