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OpenStego is a steganography app which allows you to hide some file inside another file. You can also password protect your files using this tool. Other features of OpenStego include digital watermarking, this feature is in beta stage as of now so use it with a bit of caution.
Coming to the usage of this tool, this is one of the easiest tools you would have ever used.(May be I am exaggerating, but you get the point right.)
Here is the screenshot of OpenStego:
When you open the application, you will see the above page. This is where you can select the files and how you want to hide them. You can also choose to password protect them if you want to.
Once you select the Digital Watermarking feature, you will find the below page. Below picture serves as an example to how to fill the data. Rest is self explanatory.
