Festive Alexa tricks, phone TV tips, clever ways to catch cheaters

Tip drivers with Alexa, Twitter charges $11 per month for paid subscriptions, robots are taking over customer service, 45-year-old computer for $375K auction, share your phone to a TV screen, tech clues your partner is cheating and how to wipe your ex from your digital world. Learn more about your ad choices. Visit megaphone.fm/adchoices