it is a program that helps you to lock your terminal. it is only for linux operating system created in unix programming language. it user hashing technique to store the password and other stuff. so stay do not worry about your password because no one can see your password.
type the following line in your terminal #to downlod the package git clone https://github.com/altaf7740/lock_terminal.git
#move into lock_terminal directory cd lock_terminal
#give executable permission to install chmod +x install
#run the install file ./install
not give the super user password and hit enter
now set new password and repeat new password and set some security question answer. it will help you to recover your password thats all now open new terminal and u found the new terminal will ask for password type the password that you have set earlier and unlock it.
if u forgot your password it wil allow to recover your password after three wrong attempt. just answer the security question and set new password
thank you