Multi-user retro reflector data input

Details Multi-user retro reflector data input Multi-user retro reflector data input

2006-11-21

2006-11-21

Phan, James (Department: 2872)

Optical: systems and elements

Signal reflector

Body carried

C359S517000, C356S152300

Reexamination Certificate

active

07137711

ABSTRACT:
The apparatus uses retro-reflected light, having a fixed component (41) and a variable component (37) varied by a person, from a retro reflector (31) connected to a person to input data (37A) to an information system (13) and does this for each of several persons in the same time interval.

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