An integrated circuit has controller circuitry having inputs coupled to a test clock lead and to a test mode select lead, and having state outputs indicating states that include a register clock state, a register capture state, and a register update state. The user terminal is assigned a serial number. The verified contents of the identification documents may be used for identification purposes such as age restricted purchases, preordained organ donors or possible criminal prosecution. The second and third storage regions are regarded as a top storage region.