Building a Twitter IVR with text-to-speech and the Nexmo Voice API

The author of this text has created a Twitter bot that can be controlled using a phone call, allowing users to interact with it without needing data or Wi-Fi. The bot uses Nexmo's API and Dual-tone multi-frequency signalling (DTMF) to read out tweets from specific hashtags or accounts. To control the bot, users dial a number on their phone, which is then used as input for the bot. The bot can be customized to use different Twitter accounts or hashtags, and even other data sources like Hacker News. Once set up, users can call the virtual number to interact with the bot, which will read out relevant tweets or messages based on their input.