You can get into IoT using a cheap tablet off of eBay: <a href="http://ilikekillnerds.com/2015/10/cheap-ebay-android-tablets-and-the-internet-of-things-iot/" rel="nofollow">http://ilikekillnerds.com/2015/10/cheap-ebay-android-tablets...</a><p>All you need is a device with wifi, preferably running Android as it is more customisable and easier to hack into. For around $50 you can get a decent tablet (no-name brand) with everything you'll ever need (including GPS and sim support).<p>I created a parking inspector sensor at my old workplace because it was all street parking, but only for the residents and nowhere to really park. So we would all park on the street and occasionally the parking inspector would pay a visit.<p>What they would do is chalk your tires and then they would come back a little later and see if you had moved or not. What I did was use a cheap IoT connected device with a sim card, it would send a cheap SMS to my real phone when it detected movement (from being chalked). Occasionally it would trigger false positives, but it worked. I was popular at the office, because they knew if I got chalked, they did as well.<p>Then you would go move your car or wipe off the chalk off of the tyre.