By now, we are used to the fact that facial recognition technology allows our phones to identify us—and allows us to see our email, do our banking, order food and hail a ride service. Some of us have even experienced the eerie sensation of Amazon's Alexa sympathetically informing us that we sound stressed, sad or angry. But the pace of change is picking up. AI facial and voice recognition technologies can do more, faster. For those new lawyers and law student readers, take note: Privacy law is a growth field.