Patent ID: 11963003
Assignee: STEFAN MEYER
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A sensing device comprising:
a sensing unit for sensing at least a given phenomenon; a storage medium for storing digital data;
a communication unit for receiving and transmitting digital data and/or signals;
a time-keeping unit for providing a timestamp, and an electronic circuit being operationally connected to the storage medium, the sensing unit, the communication unit, and to the time-keeping unit;, wherein the sensing device is configured to selectively operate in:
a manufacturing mode, wherein the electronic circuit is configured to permanently store an unique code in the storage medium;
an unprovisioned mode wherein the electronic circuit is configured to wait for receiving a provisioning code from a provisioning device, and, in response of a provisioning code matching the unique code of the sensing device, to:
generate a private key for signing data, and
deduct a public key for verifying data being signed by said private key;

a provisioned mode, wherein the electronic circuit is configured to collect data provided by the sensing unit and to:
sign, by said private key, the collected data and a timestamp identifying an acquisition of the collected data or a transmission event provided by the time-keeping unit so as to provide a digital signature being verifiable by said public key, and
transmit a packed data to a gateway device and/or to a server, the packed data comprising the collected data, the timestamp, the digital signature and the public key; and
an end-of-life mode, wherein the electronic circuit is configured to permanently erase the private key.