Philips Uses LEDs To Guide Shoppers Indoors
detect when a customer is nearby, which in turn could prompt them on their phone with announcements such as discounts on a particular food product, and so on. However Philips might have something up their sleeves too with the company’s LED bulbs which can also be used as an indoor navigation system. Recently over in France, a Carrefour supermarket has become the testing ground of Philips’ LED navigation system. How it works is that the LED bulbs can transmit codes via light waves.