Background: I'm investigating an AV project that requires large touchscreen panels driven by a media PC. The design calls for a redundant PC that can be switched to in the event of the primary failing. This is achievable in the sense that the screens input can switch from one source to another (e.g HDMI1 to HDMI2) however I am hitting a roadblock when it comes to how to switch the touchscreen (HID) output from PC1 to PC2.
Other Investigations: I've exhausted a number of avenues looking into "mirroring" the USB signal between both machines and found this inst feasible. A possible alternative would be a USB / KVM switch however this is impractical and adds another possible point of failure into the design.
Potential Solution: What id like to know is, is it possible to create a touch screen panel with two identical USB outputs (literally two USB cables sending the exact same signal to two independent PCs). My knowledge on the topic is sketchy but to my mind it would work something like this> Analog input from user touching screen > touch screen controller converts signal to digital > controller "splits" signal > controller serializes data > controller sends 2 separate USB outputs (one to each PC)
The touch panel overlays are being custom build so hardware isn't an issue I'm just trying to find out if I'm some how breaking some basic fundamental law of physics here or if I'm on the right track. All help / feedback / suggestions greatly appreciated!