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From: Martin Brown <'''newspam'''@nonad.co.uk>
Newsgroups: sci.electronics.design
Subject: Re: Product packaging
Date: Thu, 15 May 2025 11:45:15 +0100
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On 14/05/2025 23:52, Don Y wrote:
> On 5/14/2025 3:50 PM, Don Y wrote:
>> A necessary condition is that devices be easily cleaned,
>> without the benefit of sight (so people aren't "grossed out"
>> by the accumulated dirt and grime on a device used by an
>> unsighted individual:  "Don't you ever CLEAN that?")

Does that mean basically making it IP67 so that it can survive dunking 
in a basin of warm soapy water?

I have seen stuff intended for clean rooms where everything is made as 
smooth as possible and all moving parts hermetically sealed behind a 
flexible membrane that is very easy to wipe down.

Environment where (noxious) chemical spills are a real possibility.

> By way of common example:  look down at your mouse.
> Chances are, there are bits of dead skin hiding in the
> various seams between the assembled covers, buttons,
> etc.  And, the handled surfaces likely show signs of wear.

In my case mouse buttons have a high polish and I still use keyboards 
that work OK even when the legends have long since worn completely off 
the most commonly used keys. "Q" and "Z" never seem to wear out. 
Advantage of touch typing.

Ancient mice with balls were pretty gross when they stopped working.

Last keyboard I had to retire got a glass of wine spilled into it and 
did not recover after careful washing with distilled water.

-- 
Martin Brown