What does the padlock mean on .zip files

Posted by Memor-X on Super User See other posts from Super User or by Memor-X
Published on 2013-10-28T03:16:42Z Indexed on 2013/10/28 3:58 UTC
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windows-7

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compression

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zip

sometimes when i create .zip files by right clicking on a file/folder and going to Send to > Compressed (zipped) folder there is a small padlock on the icon

i can open it easily enough however i am wondering what it means and if it could prevent the .zip file being opened up on other computers as i do this to zip up soundtracks i rip and tag with album art in case if i need them on another computer

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