Use APKPure App
Get Computer Locker(Alpha Version) old version APK for Android
Locking Your computer remotely using you Android
you can remotely lock Linux, Windows and MAC
and only remotely unlock Linux.
you can download the Desktop Version from here
https://drive.google.com/folderview?id=0BzKLb-Q5X_sbZG02Wk5zVHpBdHc&usp=sharing
DONATE FOR ME TO HELP IMPROVE THIS APP
on here
https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=K6LDUCNMK7E9L&lc=IL&item_name=Personal¤cy_code=USD&bn=PP%2dDonationsBF%3abtn_donateCC_LG%2egif%3aNonHosted