Utilizing multiple computing devices to verify identity

A computer program product for identity verification using computing device collaboration, the computer program product comprising:

• one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising:
• program instructions to generate, by one or more computer processors, a hash based, at least in part, on device specific information for one or more user owned devices, the device specific information for the one or more user owned devices registered in a user account;
• in response to receiving a request from an initial device to verify a user's identity, program instructions to determine, by one or more computer processors, whether a hash for the initial device matches the hash for at least one of the one or more user owned devices;
• and
• if so, program instructions to send, by one or more computer processors, one or more challenge questions to the initial device, wherein the one or more challenge questions include at least one challenge question based on the device specific information for the one or more user owned devices;
• and
• program instructions to determine, by one or more computer processors, whether each of one or more responses to the one or more challenge questions is correct.

A computer system for identity verification using computing device collaboration, the computer system comprising:

• one or more computer readable storage media;
• program instructions stored on at least one of the one or more computer readable storage media for execution by at least one of the one or more computer processors, the program instructions comprising:
• program instructions to generate, by one or more computer processors, a hash based, at least in part, on device specific information for one or more user owned devices, the device specific information for the one or more user owned devices registered in a user account;
• in response to receiving a request from an initial device to verify a user's identity, program instructions to determine, by one or more computer processors, whether a hash for the initial device matches the hash for at least one of the one or more user owned devices;
• and
• if so, program instructions to send, by one or more computer processors, one or more challenge questions to the initial device, wherein the one or more challenge questions include at least one challenge question based on the device specific information for the one or more user owned devices;
• and
• program instructions to determine, by one or more computer processors, whether each of one or more responses to the one or more challenge questions is correct.