Digital signage has become much more of a dynamic medium where the content is driven in part by real-time conditions and environmental context. Advertisers would much rather pay for adverts when there is a suitable context (eg. it's raining so advertise umbrellas), and when they know someone is attentive or at least in the proximity of the sign. Context can also be defined by a person physically interacting with an item (ie. lift and learn). In these instances, sensors in smart shelving can trigger specific signage based on the item of interest. There is a vast array of sensor technologies now available to meet the criteria for context awareness in digital signage and we hope this series will help to better understand how those technologies can be utilized in your digital signage deployments.
What is RFID?The first in our series covers RFID (Radio Frequency Identification). RFID is a wireless technology for identifying objects based on 'tags'. These tags contain electronically stored information which is retrieved by an RFID 'reader'. In most cases the tags are passive devices (not powered) which derive their power from the electromagnetic energy transmitted by the reader. The tags emit their unique ID which the reader then sends to the computer for processing. NFC is a term sometimes used reciprocally with RFID, but is in fact a subset of the RFID technology. NFC is a high frequency variant of RFID.
RFID for Digital SignageRFID is a great fit for product information displays. Someone interested in a product would either lift the product, or place the product on a designated area to trigger the relevant information on the digital signage. Both these scenarios are driven by the ability for RFID to determine an objects ID as well as the distance to that object wirelessly. Later, in our example, we will implement a simple 'place to learn' kiosk where the product is placed on or held near the reader in order to trigger the signage.
Revel Digital Integration
|SparkFun RFID Starter Kit|
|Check the box 'Enable USB serial port' in the player settings|
|Create a slideshow playlist of images associated with your tags|
|Add a Smart Schedule condition to the playlist item with your tag ID|