13. A computing-device implemented method, comprising: providing, by an age verification server, a query to a user, receiving, by the age verification server, voice data from the user responsive to the query, performing, by the age verification server, voice recognition on the voice data to identify a query answer, calculating, by the age verification server, a confidence score associated with the query answer, wherein the confidence score represents the likelihood that the query answer has been accurately identified, and determining, by the age verification server, a likely age range associated with the user based on the confidence score, wherein the voice recognition is performed in a manner to increase a likelihood of recognition of voice data for a particular age range of callers.
13. A computing-device implemented method, comprising: providing, by an age verification server, a query to a user, receiving, by the age verification server, voice data from the user responsive to the query, performing, by the age verification server, voice recognition on the voice data to identify a query answer, calculating, by the age verification server, a confidence score associated with the query answer, wherein the confidence score represents the likelihood that the query answer has been accurately identified, and determining, by the age verification server, a likely age range associated with the user based on the confidence score, wherein the voice recognition is performed in a manner to increase a likelihood of recognition of voice data for a particular age range of callers. 18. The computing-device implemented method of claim 13 , further comprising: receiving, by the age verification server, a request for age verification from a service provider; providing, by the age verification server, the query to the user in response to the request; and transmitting, by the age verification server, the likely age range associated with the user to the service provider.