Abstract: Systems and methods are provided for activation of software that uses digital licenses. In some embodiments, a software vendor may securely deliver at least one digital proof-of-purchase to an OEM (e.g., to avoid piracy of software licenses). The OEM may install an associated software copy on a computer system, and store the at least one digital proof-of-purchase on it. The OEM may communicate the proof(s)-of-purchase stored on the computer system and its system identifier to the software vendor. A user of the computer system may attempt to activate the OEM pre-installed software by sending an activation request to a software vendor, who may verify whether or not the digital proof-of-purchase and system identifier in the activation request match those previously reported by the OEM, and may either grant or deny the activation request.

Abstract: Systems and methods are provided for activation of software that uses digital licenses. In some embodiments, a software vendor may securely deliver at least one digital proof-of-purchase to an OEM (e.g., to avoid piracy of software licenses). The OEM may install an associated software copy on a computer system, and store the at least one digital proof-of-purchase on it. The OEM may communicate the proof(s)-of-purchase stored on the computer system and its system identifier to the software vendor. A user of the computer system may attempt to activate the OEM pre-installed software by sending an activation request to a software vendor, who may verify whether or not the digital proof-of-purchase and system identifier in the activation request match those previously reported by the OEM, and may either grant or deny the activation request.

Abstract: A Pre-Contact Signal Detector (PCSD) used to predict contact between read-write head and disk surface. A preamplifier may include the PCSD. A main flex circuit may include the preamplifier. A head stack assembly may include the main flex circuit. An embedded circuit may use a pre-contact alert circuit, which may also be included in the PCSD and/or the preamplifier, also the main flex circuit, the head stack assembly. A hard disk drive may include the head stack assembly communicating with the embedded circuit. Manufacturing methods for these and their products of the manufacturing processes, including the program system.