14. A system for screening incoming calls, comprising a processing unit receiving an incoming call from a caller, generating a prompt to the caller in response to the incoming call, receiving a response corresponding to the prompt from the caller, determining whether the response conforms to a specific answer, if so, driving the device to indicate the reception of the incoming call using a manner, and if the response does not conform to the specific answer, re-generating the prompt to the caller, re-receiving a response corresponding to the prompt from the caller, and determining whether the response conforms to the specific answer.
14. A system for screening incoming calls, comprising a processing unit receiving an incoming call from a caller, generating a prompt to the caller in response to the incoming call, receiving a response corresponding to the prompt from the caller, determining whether the response conforms to a specific answer, if so, driving the device to indicate the reception of the incoming call using a manner, and if the response does not conform to the specific answer, re-generating the prompt to the caller, re-receiving a response corresponding to the prompt from the caller, and determining whether the response conforms to the specific answer. 15. The system of claim 14 wherein the processing unit further generates the prompt by generating a first voice or a text message to the caller.