Answer:
Encryption used on hard drives
Explanation:
TPM is a hardware chip. It is a type of module that is used to authenticate the hardware devices with the help of encryption keys (passwords). It is the short form of Trusted Platform module. The hardware devices that be authenticated through this module may include personnel computer or laptops. There are different keys, password and security codes.
So, the best sentence that describes, TPM is Encryption built into hardware
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