http://www.imtic2008.org/what-is-a-smart-card Wed, 01 Sep 2010 13:36:06 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://www.imtic2008.org/what-is-a-smart-card/comment-page-1#comment-15 Kelvin Wed, 23 Dec 2009 12:54:55 +0000 http://imtic2008.org/what-is-a-smart-card#comment-15 Most such buildings have a back-up generator that kicks in if there is a black-out. These generators usually only run emergency and essential things (such as security doors and emergency lighting) and can run for 12 -24 hours usually. After this period, they doors will be deactivated (unlocked) as the electromagnet will be turned off. The doors themself are powered through the AC mains, with the back-up generator in parallel, so neither battery or plug powered (a plug comes from the AC mains though, I am only say this as you cannot grab a plug an pull in out for the door to turn off). Interfering with the power supply to the door will most likely trigger an alarm, a testing circuit would probably be in the circuit to test whether the door has been unlocked without autherisation. Most such buildings have a back-up generator that kicks in if there is a black-out. These generators usually only run emergency and essential things (such as security doors and emergency lighting) and can run for 12 -24 hours usually.
After this period, they doors will be deactivated (unlocked) as the electromagnet will be turned off.
The doors themself are powered through the AC mains, with the back-up generator in parallel, so neither battery or plug powered (a plug comes from the AC mains though, I am only say this as you cannot grab a plug an pull in out for the door to turn off).
Interfering with the power supply to the door will most likely trigger an alarm, a testing circuit would probably be in the circuit to test whether the door has been unlocked without autherisation.

]]> http://www.imtic2008.org/what-is-a-smart-card/comment-page-1#comment-14 WPMixer Wed, 23 Dec 2009 05:53:17 +0000 http://imtic2008.org/what-is-a-smart-card#comment-14 end apdu commander for manager card? good video . end apdu commander for manager card? good video .

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