Reminds me of this Bugemos strip.

So, my most silent PC is complete. A fanless power supply, SSD array…
A passive processor heatsink with inherent 0.01 °C/W thermal resistance
And to replace that pesky clicky keyboard, I combined a webcam and semaphore code
I really should stop procrastinating and translate their whole backlog, I have it downloaded already…




















There are other ways, for example Ximik_Boda designed T2, a “pro” input method for T9 keyboards. Pressing a key, such as 8/TUV, brings up a popup that shows the mapping of characters to the second key, here 1=
t, 2=u, 3=v, 0=8. Every lowercase letter, number and symbol can be typed with exactly 2 key presses, and there is no annoying wait when typing words like “nonmonogamous” with 7 waits for the 6/MNO key multi-click to time out.Unfortunately, the order is important, for example 62 is
nand 26 is%. Unordered pairs (9 keys and 2 legs) only allow for 36 combinations, which is not enough. 7² for 49 combinations plus two special keys, a modifier and a mode switch (lowercase/uppercase/navigation) seems to be optimal.