In Chapter 10, Publishing to Web Services, we explored web services. We then introduced Bluetooth in Chapter 11, Creating a Doorbell Button Using Bluetooth, and built a Bluetooth doorbell using the Android app Blue Dot and our Raspberry Pi.
In this chapter, we will enhance our Bluetooth doorbell by adding the ability to send messages when someone is at the door. We will take what we've learned, and apply it to add text message functionality using the Twilio account we set up in Chapter 10, Publishing to Web Services.
The following topics will be be covered in this chapter:
- Sending a text message when someone is at the door
- Creating a secret doorbell application with text messaging