Michael Watterson wrote:
> Kiall Mac Innes wrote:
>> You could also have a look at http://www.phidgets.com/ .
One thing that may need to be considered, particularly since you suggest that
no external connectivity is required, is the total security of your solution.
As an example, there's no point in installing a steel re-inforced door with
card reader, key lock and fingerprint scanning on a garden shed. If someone
wants to get in they'll break the window or kick a hole through the wall,
neatly and effectively bypassing all the security measures on the door.
If there's something valuable in the building, and that's what you want to
protect, consider that you may want to monitor who manages to swipe in and out
- but also have some forced entry alarms, cameras or motion sensors
communicating back so that you'll at least be aware of a potential problem.
Temperature sensors are also incredibly useful for detecting error states like
something being on fire.
Anyway, I assume you've considered all this and the bigger picture.
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