To hide information in a file run: notepad file-name:ADS-name
Example with this file: notepad hidden_info_on_file.txt:hiddeninfo
Re-run the command to show the hidden information.
Note: Alternate Data Stream (ADS) is supported only on NTFS file system. If the file is copied or moved to a different file system, such as FAT32, all the ADS information will be dropped and the hidden information will be lost.