Digital Holograms can be injected to record each manufacturing step and are stored securely on the device itself using Blockchain technology to prevent anyone from being able to tamper with the ledger of Digital Holograms.
No network access is needed to add a Digital Hologram. For example, on an ARMv8-M based device, they would typically be stored in a region of the flash protected by TrustZone™. Digital Holograms are single use and, once they are bound to a specific device, they are cryptographically protected against re-use or theft.
During its manufacture, or at subsequent lifecycle stages, a device may obtain several Digital Holograms, each representing individual events. For example, to record that a device has been assigned a specific model number, has passed through a QA process, or has been recalled or serviced, a trusted player in the lifecycle of the device could simply add a Digital Hologram.
If a critical step is missed, due to IP theft or overproduction, for example, then the faulty or counterfeit devices will miss one or more of the required Digital Holograms and the omission can easily be detected. This could be either during a later stage of production or when the device is deployed in the field. The exact path a device takes from inception to the OEM is recorded when the Digital Holograms are installed, enabling manufacturing processes to be audited.
Device Attestation Enables Automatic Cloud Enrollment