An object (20) or an article, such as a data storage cartridge, for a detector or reader, such as a data storage disk drive, has a latent illuminance marker. A light source (34) illuminates the marker and the marker emits illuminance as phosphorescence. A photosensor (36) detects the emitted illuminance, and the decay time is determined. The decay time is checked to provide identification and/or authentication of different types or generations of objects or articles, such as data storage, cartridges, or provides a secure keying mechanism for authorized access to proprietary software.

Title
Latent illuminance discrimination marker and system for data storage cartridges
Application Number
EP19980949520 19980925
Publication Number
1018090 (A1)
Application Date
September 25, 1998
Publication Date
July 12, 2000
Inventor
Bracken Allen T
US
Graves Todd L
US
Shelton Todd R
US
Dixon Glenn B
US
Thomas Fred C Iii
US
Assignee
Iomega
US
IPC
G06K 07/12
G11B 23/30
G11B 23/28
G11B 19/12
G11B 15/05
G06K 19/08
G06K 19/06
G06K 17/00
G06K 07/12
G03C 01/73
G11B 23/30
G11B 23/28
G11B 19/12
G11B 15/08
G06K 19/08
G06K 19/06
G06K 17/00
G06K 07/12
G03C 01/73
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