Sony VAIO VGN-Z500 Series - Manual (Page 130)

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Customizing Your VAIO Computer
Using Trusted Platform Module (TPM)
The embedded Trusted Platform Module (TPM) provides your computer with basic security functions. In combination with the
TPM, you can encrypt and decrypt your data to strengthen computer security against inappropriate access.
TPMs are defined by Trusted Computing Group (TCG) and also called security chips.