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Meter, e.g. odometer, coding method, for securing meter reading, involves determining newly coded meter reading by using forward linked one-way function of reading, where display area of function is included in function prototype area
Meter, e.g. odometer, coding method, for securing meter reading, involves determining newly coded meter reading by using forward linked one-way function of reading, where display area of function is included in function prototype area
The method involves activating counting of a newly coded meter reading at a meter, during an increase or decrease of a meter reading. The newly coded meter reading is determined by using a forward linked one-way function of the coded meter reading. A display area of the function is included in a prototype area of the function. The meter reading is initialized with an initial meter reading before the initial increase or decrease of metering conditions. Independent claims are also included for: (1) A testing method for testing an authenticity of a meter reading of a meter; (2) A coding device for executing the coding method for securing a meter reading of a meter before an additional manipulation; and (3) A testing device for executing the method for testing an authenticity of a meter reading of a meter.
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