An identification band is provided which includes an elongated band having an outer surface, an inner surface and first and second ends. A first chemical composition, e.g., a soluble ink, is distributed on the outer surface of the band proximate the first end. A display region is disposed in...http://www.google.de/patents/US5785354?utm_source=gb-gplus-sharePatent US5785354 - Self-expiring identification band
