Tamper resistant magnetic stripes
Patent
·
OSTI ID:20013853
This invention relates to a magnetic stripe comprising a medium in which magnetized particles are suspended and in which the encoded information is recorded by actual physical rotation or alignment of the previously magnetized particles within the flux reversals of the stripe which are 180{degree} opposed in their magnetic polarity. The magnetized particles are suspended in a medium which is solid, or physically rigid, at ambient temperatures but which at moderately elevated temperatures, such as 40 C, is thinable to a viscosity permissive of rotation of the particles therein under applications of moderate external magnetic field strengths within acceptable time limits.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 20013853
- Resource Relation:
- Other Information: PBD: 9 Nov 1999
- Country of Publication:
- United States
- Language:
- English
Similar Records
Tamper resistant magnetic stripes
A particle rotation technique for producing very high coercivity magnetic stripes
A particle rotation technique for producing very high coercivity magnetic stripes
Patent
·
Fri Jan 01 00:00:00 EST 1999
·
OSTI ID:20013853
A particle rotation technique for producing very high coercivity magnetic stripes
Conference
·
Mon Apr 19 00:00:00 EDT 1993
·
OSTI ID:20013853
A particle rotation technique for producing very high coercivity magnetic stripes
Conference
·
Mon Apr 19 00:00:00 EDT 1993
·
OSTI ID:20013853