RFID tags are available in a few different standards ranging from the very secure ones with data and encryption, to the much simpler ones that simply present themselves as a unique (or not so unique) serial number to the RFID reader.
This is a look at the cheapest and most common, that is widely available on ebay from a wide range of suppliers as either bare components or packages for full door control. Not that I'd trust these much for security with people like us about...
Негізгі бет RFID reader technology and cloning tags!
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