| 摘要 |
Abstract There is provided a method comprising: at a device worn by a person in a cleanliness sensitive environment, electronically detecting at least a threshold concentration of a cleanliness agent on a portion of a person's skin that has been placed in the vicinity of 5 the device, and using light or sound to indicate to people in the vicinity of the person if the portion of the person's skin is not clean, based on the electronic detecting. 27/10/112914oo. (GHMaUs) P78357AU.A 2 14 24 0--'1 L O.. -19 17 RE-GIN P2 -2 A-rHeNA MeIA |
