some kind of special tool. It's getting crazy. I have about 30 single purpose screwdriver tips that I had to buy just to be able to open the various devices. I remember when the, so called, security screws were there to prevent tampering with sensitive or dangerous innards. That I can understand, but replacing the AAA batteries on a flashlight shouldn't be all that dangerous! Luckily, I have found some inexpensive screwdriver bit sets that cover most of the security screws I have encountered so far.
I have so little to spare...
At some point, you will find yourself up against one of the oddball security screws, wishing you had a way to easily remove it. This is the way!
Be Seeing You...Down The Road,
Rich "The Wanderman"