Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Cyriac Roeding0
Aaron T. Emigh0
Date of Patent
February 6, 2018
Patent Application Number
12762556
Date Filed
April 19, 2010
Patent Citations Received
Patent Primary Examiner
Patent abstract
The transmission system transmits an encrypted identifier ultrasonically in an open-air environment using an ultrasonic transmitter. The ultrasonic identifier is associated with a location, which may be a store or a department within a store, and may be received by a microphone on a mobile phone. The identifier may be used to infer presence of the mobile phone user at the location associated with the identifier. The transmitter may include an ultrasonic transducer. The system may further provide a reward, responsive to inferring presence at the location.
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