The Face id Yahoo mail is the part that requests the exchanges by watching your face utilizing the front camera. Notwithstanding, in the event that you're not set up to utilize the domain, by then this may be a possible aftereffect of how your camera is having an issue. So check your camera and discover uphold by appearing at Yahoo Customer Service Phone Number, in the event that you feel the need. https://www.contactmailsupport.net/customer-service/yahoo/