The most widely used anti-bot technique is the use of CAPTCHA, which is a form of Turing test used to distinguish between a human user and a less-sophisticated AI-powered bot, by the use of graphically-encoded human-readable text. Examples of providers include Recaptcha, and commercial companies such as Minteye, Solve Media, and NuCaptcha. Captchas, however, are not foolproof in preventing bots as they can often be circumvented by computer character recognition, security holes, and even by outsourcing captcha solving to cheap laborers.
Messenger bots might also be able to revolutionize customer support. Facebook has become a popular platform for brands to interact with their customers. Many times customers will take a complaint to a brand’s Facebook page and have it resolved over chat. A Messenger bot makes it easier for you to get help. The quality of the support will vary but for smaller business that rely on Facebook for sales a bot is going to help them stay ‘online’ 24/7.