Patent ID: 11880474
Assignee: JOAO CARLOS GOMES DE OLIVEIRA
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 6:
7. The cover or components for cell phones or other digital devices featuring physical cryptography to forward and receive encrypted messages on a tamper-proof basis according to claim 1, wherein the message can be typed through a secondary keypad (60) with sealed hardware, either fastened or not to the cell phone or digital device (1) of the sender, and may even be retractable, with the sender typing the message normally on the secondary keypad (60) with sealed hardware, and this message is encrypted by forming the matrix image (10) and temporarily recorded on said sealed hardware installed inside said secondary keypad (60), and this sealed hardware encrypts and sends the message already encrypted to the mobile device or digital device (1) of the sender, through Bluetooth or physical connection, and the mobile device or digital device (1) of the sender sends the message already encrypted to the recipient, through any message-sending means.