| http://www.w3.org/ns/prov#value | - ysically coupled to the service 204 previously communicated from the service 204 to the user's client device 112, to validate that the user is in physical proximity to the service 204, thus enabling the service 204 to be invoked by the user through the user's client device 112.Examples of the present invention are presented using a (PIN, keypad) pair as (input, input device).
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