1. A computerized method for authenticating a user of an electronic system, comprising: accessing, from a storage circuitry, data relating to measured parameters for a plurality of interactions with an input device for a purported authorized user; accessing, from the storage circuitry, a first situation probability distribution representation for the plurality of interactions for an authorized user, while in a known situation; accessing, from the storage circuitry, a first situation probability distribution representation for the plurality of interactions for a wide population, while in a known situation; determining with a computer processing circuitry, a value indicative of whether the purported authorized user is the authorized user, utilizing (a) the data for the purported authorized user for the plurality of interactions, (b) the first situation probability distribution representation for the authorized user for the plurality of interactions, and (c) the first situation probability distribution representation for the wide population for the plurality of interactions; and authenticating with the computer processing circuitry, the purported authorized user as the authorized user, if the value satisfies a prescribed threshold.