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Most of optical security systems have a fixed lock and multiple keys to validate whether special users are legal or illegal. but those systems will be failed under the situation when the right keys are stolen by illegal users. This problem can be solved by providing multiple locks for the different users who want to access the optical security system. Therefore, a novel optical verification system...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.