A quick test of the defining feature of my active H-shifter for simulators on PC.
It's hard do describe or show a tactile feeling with pictures or words, but I make a try by this video.
In both cases, the same amount of force was exercised on the lever, trying to engage gear as quickly as possible.
Red - active mode enabled, strong force on the lever (28mm plywood riser flexing under the base)
Green - passive mode, most like any other shifter on the market.
In games supporting SimHub, any condition can be programmed when to engage gear and when to lock out. I mean physically preventing the lever to engage.
Data received by shifter from SimHub:
-game running (yes/no)
-RPM
-Speed
-Clutch position
-Gear (N, R, 1-6)
Reverse is handled by conditions in software, no extra mechanical parts involved.