Next follow up the most common locking/unlocking commands according to the graphical environment you work with. Once installed the blueproximity package you will have to proceed to link your Bluetooth device to your computer, configure the thresholds for the signal strength level and set the locking and unlocking commands that best fit your desktop environment and the goals you want to achieve.īlueProximity preferences: locking/unlocking commands Installing Blueproximity application is very easy because there are packages available for main Linux distributions and they can be installed in the usual way:ĭebian/Ubuntu: ~$ sudo apt-get install blueproximityįedora/Red Hat/Centos: ~$ sudo yum install blueproximityĪrch Linux: ~$ sudo yaourt -S blueproximity –noconfirm Common locking/unlocking commands Otherwise, when the signal level recovers because you get closer to the computer, the screen unlock command will be executed without you having to do anything. Thus, with the solution I propose here you will minimize both risks: forgetting about manually lock the screen and exposing your password every time you type it.īlueproximity is an application that constantly monitors signal strength of a Bluetooth device linked to your computer, so that if you move away from your workplace carrying your smartphone and the signal strength falls below a given threshold for a given period of time (both parameters can be configured as you like), a command of your choice will run, normally one whose purpose is to lock the screen. But even though you always remember to lock the screen, unlocking it regularly over and over again in the presence of other people or in uncontrolled environments is also a major security risk, as you will be exposing your password every time you type it, either because someone next to you sees you writing it or because a surveillance camera records the password you enter on your keyboard. However, sometimes it will happen that you will neglect and forget to do so, compromising your information security. In an ideal world you would always remember to lock the screen when you leave your workplace to prevent another person from manipulating your computer during your absence. But there is a more effective way, and that is to configure your Linux machine so that the distance or proximity of a Bluetooth device you own, for example your cell phone or a smartwatch, automatically causes locking or unlocking the screen without having to enter any password on keyboard. One of the most basic and common security measures that you can adopt in your working environment is to protect your computer by automatically locking the screen after a certain period of inactivity, so that it is necessary to enter a password to unlock.
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