Ferrite beads and other tech you might not know the name for

[kestrell]

Kes: Of course every blind person known about teh key bumps, but I only recently learn about teh third ring on headphone jacks from Jesse the K.
FYI: when designing keyboards and keypads for visually impaired people, you only need these basic key bumps: if you add too many more, it becomes confusing and tmi.

https://www.makeuseof.com/pointless-technology-that-make-life-better/