Add RFID/NFC read and write to your Pi in an hour!
FYI: NFC = “near field communication”…
Near-field communication (NFC) is a set of communication protocols that enable two electronic devices, one of which is usually a portable device such as a smartphone, to establish communication by bringing them within 4 cm (1.6 in) of each other.
more on Wikipedia
View project at: Adafruit NFC/RFID on Raspberry Pi
Learn how to remotely monitor your beer fridge on the web using a Raspberry Pi computer and a Nintendo Wii balance board…
Source: Create a Smart Beer Fridge with a Raspberry Pi | Make:
Learn how to access *multiple cameras* (including USB webcams and the Raspberry Pi camera module) using your Raspberry Pi, Python, and OpenCV.
Best of all, our implementation of multiple camera access with the Raspberry Pi and OpenCV is capable of running in real-time (or near real-time, depending on the number of cameras you have attached), making it perfect for creating your own multi-camera home surveillance system…
Continue at: Multiple cameras with the Raspberry Pi and OpenCV – PyImageSearch