An automated system and method for authenticating entities or individuals engaging in automated or electronic transactions or activities such as financial transactions, accessing computer applications, computer software, data networks or other automated or electronic devices requiring identity verification is provided. A unique Personal Identity Value is computed and stored in an Identity Register for the entity or individual and may be used for a variety of applications including recognizing incidents of identity theft. This Personal Identity Value is based on one or more computer logic resources that incorporate the relationship among a variety of identification information elements and parameters associated with the entity or individual, such as the entity's or individual's wireless device location, the entity's or individual's home location, other associated locations, automated activities engaged in and applications accessed.