I believe it has to do with the signal path inside the keyboard - you'll need to test them unless you find evidence that shows they work.

This may look like another DIY mechanical keyboard, but it’s hiding a secret. [Mx. Jack Nelson] has combined Halloween and keyboards in glorious, haunted fashion. Type a line, any line into this bad ...

Nanopoint, the UK subsidiary of leading IT peripherals producers MaxPoint and Raidsonic, has released a new KeySonic gaming keyboard with 20 Anti-Ghosting keys to increase interaction and allow users ...