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Is there a way to temporarily disable a laptop's keyboard in order to clean/dust it off, other than having to turn off the computer?

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c.f. How to disable a keyboard? – slhck Nov 18 '11 at 10:07
How about unplugging it? – user606723 Nov 18 '11 at 16:39
To clean very dirty keyboards, Leo Laporte recommends putting them through the dishwasher and letting them dry for a few days (yes, seriously). – BlueRaja - Danny Pflughoeft Nov 18 '11 at 17:06
up vote 16 down vote accepted

Well, you could lock the screen win-L on windows or do something similar. You could probably also disable it from device manager.

I'm sure there's something similar on linux, but that is heavily desktop environment dependent.

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mostly ctrl+alt+L – HTDutchy Nov 18 '11 at 14:40

You can get a can of compressed air which will clean the keyboard without actualy pressing the keys.

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Open up a text editor and let that take the hit - or use a natural bristle brush (no static build up) with long hairs so that there's little pressure on the keys/gaps.

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Tended to do the former, but every so often you hit a... unfortunate key combination – Journeyman Geek Nov 18 '11 at 12:22

You can also just sleep you computer instead of turning it off.

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You could try KeyboardLocker to lock your keyboard , some key combinations will still work but its unlikely that you would press them , while cleaning.
Here is a how-to for the tool.

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I am still having trouble understanding why would you really need to do it ? I mean why not just switch the device off or remove the keyboard ? or do you frequently drop bowls of ramen on you keyboard after a 1000 line code sprint which you have not been able to save ? – Shekhar Nov 18 '11 at 13:24

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