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DEFCON-21-Pukingmonkey-The-Road-Less-Surreptitiously-Traveled-Updated

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BUILD A LICENCE PLATE READER<br />

DETECTOR<br />

• It uses infrared LEDs to illuminate the plate<br />

• Its always on, and it is always pulsating to try<br />

to get the best exposure<br />

• So we should be able to detect, by just using<br />

IR photodiodes right?<br />

• Had a few failures to work<br />

• Standard IR is 850nm. ELSAGs unit uses<br />

735nm LEDS which near-IR (or far-red)

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