Thanks to all. My app is basically a substitute for a mechanical switch. The reason (because I asked as well) is the client wishes to have a means of switch input but without the 'average' person being able to activate it. His 'thingys' are in very public places and the switch is going to be sort of a security feature. Never done that before and I respect the opinions and experience on this list. Thanks again for all the suggestions and pointers.

Cheers,

Kevin


On 21/02/02 at 12:25 AM Josh Koffman wrote:

>If you're talking about the kind used in home security systems to
>monitor doors and windows, I've seen a few of them freeze up and lock
>either open or closed. Also sometimes the plastic casings can crack
>after extreme weather.
>
>Josh
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>
>Kevin Fisk wrote:
>>
>> Has anyone had experience with Magnetically activated switches? I am

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