of upright 25 panel 30 shown in fig4 7 has a top portion 32 and a locking flange 33 with padlock hole 35 in use this hole is in positional registration with that of upper locking flange 27 shown in fig4 a padlock 20 or other small lock 20 a can be used to secure the two members together front face 31 of transparent panel 30 protects the surface of computer screen 19 this can be used to advantage in a retail demo environment alternately the locking collar of fig1 can be used with base of fig3 by locking into lower locking tab 26 this would offer a better unencumbered view of screen 19 fig8 shows the addition of an optional battery pack housing cage 42 feature to the locking apparatus of the embodiment shown in fig1 although it can be used with any of the embodiments herein the optional power source component 42 of fig2 and 8 can be added to any of the embodiments of this invention including those shown in fig3 51 it is preferably a cage made of heavy duty wire screen or perforated metal that is attached as by welding or rivets to a rear panel such as panel 41 in fig8 this provides a secure compartment 42 for a power source accessory 43 such as an auxiliary battery charger or battery eliminator compartment 42 is also shown in the side view.