The circuitry introduced in this invention selectively slows down the
functioning of an electronic circuit by maintaining a particular state
for a prolonged period of time. This circuitry is used not only to
achieve the desired effect in maintaining security from electronic
thieves trying to circumvent codes but also in other applications such as
enabling a circuit to continue to function in the event of a brief loss
of power. For example, in an RFID system, if a reader is frequency
hopping, a tag loses power for as long as about 400 milliseconds when the
reader changes to other frequencies. In a preferred embodiment, the
disclosed circuitry is used in conjunction with a destruct sequence.