Network-connectable sensing device

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.