Building a SMS Panic Button

Talk for the SFNode Meetup of December 2019 that shows how to build an SMS based panic button using Twilio Functions and a Flic button.

Transcript

1. Building an SMS Panic Button xabadu https://xabadu.dev SF Node - December 2019
2. Hola • I’m Fernando ✌ • From • Developer Evangelist at Twilio • Organizer NodeSchool SF xabadu https://xabadu.dev
3. Before we begin
4. (415) 300 2074
5. –George Costanza “This is not good. Worlds are colliding! George is getting upset.” A tale of two worlds
8. • This is my friend DJ • He was moving away • He was driving across country and had concerns
9. The challenge? Build something • Portable • Quick to use • Discreet • With a single action allows you to ask for help
10. What about a Panic Button?
11. Why SMS?
12. Y’all got any more of them stats? • 96% of US adults owns an SMS-capable mobile phone (vs 86% smartphones) • 98% open rate
13. How does this work?
14. IoT buttons are the bee’s knees • Single press/click • Double press/click • Long press/hold Program outcomes based on different actions: Take pictures, make phone calls or execute HTTP requests
16. Ahoy Twilio Functions • Serverless code, similar to Azure Functions or AWS Lambda • Editable online or through the Twilio CLI • Includes the Twilio Node.js client out of the box (and some other utilities)
17. Twilio Functions: Create new function
18. Twilio Functions: Get the Node.js client
19. Twilio Functions: Send a message • “from”: Any of your Twilio phone numbers, in E.164 format • “to”: Destination number, in E.164 format • “body”: A string with the message twilioClient.messages.create( )
20. What are we doing?
21. 3 step process 1. Create a serverless function with a predetermined phone number that will send an SMS anytime a request comes in 2. Configure the button to execute an HTTP request to that serverless function 3. It’s actually just 2 steps, but 3 sounded cooler
22. Let’s-a-go!
23. Thank you ✌ xabadu https://xabadu.dev