New
#91
This is the 'Official MS' description of OEM and SLP Keys.....
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Computers that come pre-installed with Windows from large manufacturers usually come with two Product Keys.
OEM SLP: This is the key that came in Windows (from the factory). It works by connecting to a BIOS flag (the SLIC table) found only on computers from that Manufacturer. Once it sees the correct BIOS flag, it self activates.
COA SLP: This is the key seen on the sticker located on the side, bottom or in the battery compartment of your machine. The purpose of this key is to be used in the case the OEM SLP self-activation stops working for whatever reason.
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The OEM_SLP Key cannot be activated on any computer other than one produced by the same manufacturer, with the same OS installed.
Your COA Key could in theory be used on another machine - which is another reason why it is not possible to move them to another machine, and why lately more and more manufacturers have taken to putting the Key inside the battery compartment of laptops, rather than on the outside.
Retrieving a Key from a computer requires physical acces to that computer, or fairly sophisticated malware. The program you refer to is irrelevant. Yes it retrieves a Key from the registry as do many other programs, such as Belarc Advisor, or ProduKey, but it has to be run on the computer.
So long as you secure your computer properly there is nothing to worry about.
It is also possible to 'hide' the Key so that it cannot be retrieved by such programs - but generally, it is considered inadvisable.