Apparatus and method for marker verification

Details Apparatus and method for marker verification Apparatus and method for marker verification

1985-04-25

1987-08-11

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

235380, 34082534, G08B 1314, G07D 700

Patent

active

046865152

ABSTRACT:
An apparatus and method are provided for product verification wherein a verification marker attached to the product produces a signal identified by a disguised scanning code and matched to a visible code indicia on the product. The signal from the marker is in response to a known applied interrogation field generated by a scanning unit. The scanning unit is portable and includes a detector for the response signal. An EPROM processes the response signal and generates the scanning code. The programming is such that the code is random and different for each manufacturer/product and corresponds to the visible code indicia. The marker includes an amorphous metal ribbon having a known magnetomechanical vibration characteristic.

REFERENCES:
patent: 4489318 (1984-12-01), Goldman
patent: 4510490 (1985-04-01), Anderson, III et al.
patent: 4558175 (1985-12-01), Genest et al.
patent: 4578567 (1986-03-01), Granzow et al.

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