OK, so we all know what Google’s Chromecast is, yes? Someone at the back — why are they always at the back? — seems unsure. In a sentence, then, Chromecast is a small WiFi-connected slug that you slip into a spare HDMI port on your TV, and which plays video and audio under the direction of a remote control app.
US department store Macy’s recently said it is implementing iPhone-based tracking tech the better to encourage browsing punters to buy. Of course, Macy has chosen to pitch this as an Apple technology – figuring, presumably, iPhone owners are more receptive to inducements delivered through technology and have more cash to splash than Android fans.
But the fact is, the system Apple calls iBeacon simply makes use of features already part of the Bluetooth Low Energy (LE) spec.
This got me thinking: how difficult would it be to build a similar system of my own? Not very hard at all, it turns out. Choose the right kit and it can be quite cheap too. I created my beacon using a £30 Raspberry Pi and a £12 Bluetooth 4.0 USB dongle.