An electronic product identification price display system for installation in a retail environment storing a plurality of consumer products on shelves. The system includes a plurality of remote activator modules installed within the retail environment, and a plurality of remotely-updateable electronic-ink...http://www.google.de/patents/US7918395?utm_source=gb-gplus-sharePatent US7918395 - Electronic product identification and price display system employing electronic-ink display labels having a stacked architecture for visually displaying the price and/or promotional information for said consumer product, remotely updated by one or more remote activator modules installed within the retail environment
