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A keylogger is a tool designed to record every keystroke on a system for later retrieval. Python keyloggers use python to be preinstalled in the victim's system and to have python installed or you may convert it into a binary to be installed in the system any way. The most basic program can collect the info only typed by the target and collect it via email or application. More sophisticated programs can collect:Typed Information, GPS location, IP address, saved data and saved data. You can even stealth your operation by adding the hiding the programs in a location and hiding the folder using the hide function.