![]() NFC uses the same frequency as HF RFID readers and tags: MHz NFC capable devices may act as both readers and tags. RFID uses three frequency ranges: LF, HF, and UHF. They leverage the power provided by the reader. ![]() Active tags have their own power source and may broadcast with a range of up to 100 M. The tag responds with its unique identifier. The reader requests the antenna to signal the tag. At a minimum, an RFID system comprises three things: a tag, reader and an antenna. NFC is a subset of RFID but with other capabilities. NFC RFID is the process by which items are uniquely identified using radio waves. Three popular approaches to passive tagging (1) UHF RFID < 10 ft not successful NFC is a form of RFID with potential (Apple pay) (2) Optical tags (Quick Response Codes) Requires a camera and an application Yields text, number or URI (3) Bluetooth Low Energy (BLE) All modern smart phones support Advertise a packet, perhaps a URL, every second One year on one small battery BLE is used by iBeacon (Apple) and Eddystone (Google)ĥ RFID vs. A photon microcontroller provides Wi-fi and is, therefore, not passive. Smart phone or browser client interaction with services Proxy web service for poster Low level peer to Peer – Bluetooth or wi-fi Identification data URI NFC Tag on Poster Status and Control FitBit Figure 1 Bluetooth LE TagĤ Passive devices are not suitable for direct wired or wireless connections to the internet.įor these devices, we need perhaps a tag, a smartphone and a proxy web service. It might be best to have one bridging device that supports Wi-Fi and enables simple peripheral IoT devices to talk to the bridge. All of these increase cost and power consumption. Other IoT enablers include: - peer to peer connections (mesh networks) - low latency and real time interactions - the integration of devices that have little or no processing capabilities Physical web = web technology + IoT Things need to be identified: - From an IoT perspective, IPv6 supports 128-bit addresses - At a higher level URI’s are composed of URN’s and URL’s URL’s in conjunction with DNS route and connect to services URN’s provide a name but not necessarily a location Any device, in practice, that connects directly to the internet requires a physical Ethernet, Wi-Fi radio, or cellular modem. The alternative, of course, is to train an intern (or your little sister) to do this manually, and pay him or her for the trouble.Presentation on theme: "95-733 Internet of Things Some notes from “Enabling to Internet of Things” by Want, Schilit, and Jenson."- Presentation transcript:ġ Internet of Things Some notes from “Enabling to Internet of Things” by Want, Schilit, and JensonĢ To overcome scale and complexity, preferentially discover things nearby. So the best case level of effort to get all beacons configured is 9 hours. I have lots of experience with these kinds of apps, and would expect it to take me at least 8 hours, probably much more. You'll also have to account for the time it takes you to write the config app and debug it until it is working reliably and as quickly as possible. So best case scenario, you're talking 5 secs x 700 = one hour to get them all configured. Since bluetooth connections can be a bit finicky, this might take 5 secs or more with retries. You will still, however, need to put each RadBeacon Dot into configuration mode one by one and wait for your custom configuration app to connect via bluetooth and configure the beacon. If you can get your hands on such a SDK, you could build an iOS, MacOS or Android app that does all of these configuration steps. I would email or call support at Radius Networks and ask if you can get access to a private SDK to configure your beacons for iOS, MacOS or Android.
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