Electronic shelf label

An electronic shelf label (ESL) system is used by retailers for displaying product pricing on shelves. Typically, electronic display modules are attached to the front edge of retail shelving. These modules use electronic paper (E-paper) or liquid-crystal display (LCD) to show the current product price to the customer. E-paper is currently trending in the ESL market as it provides crisp display and supports full graphic imaging. A communication network allows the price display to be automatically updated whenever a product price is changed. This communication network is the true differentiation and what really makes ESL a viable solution. The wireless communication must support reasonable range, speed, battery life, and reliability. The means of wireless communication can be based on radio, infrared or even visible light communication. Currently, the ESL market leans heavily towards radio frequency based ESL solutions.

A study led by ABI Research said that the global ESL market could reach US$2 billion by 2019.

Automated ESL systems reduces pricing management labor costs, improves pricing accuracy and allows dynamic pricing. Dynamic pricing is the concept in which retailers can fluctuate pricing to match demand, online competition, inventory levels, shelf-life of items, and to create promotions.

...
Wikipedia